From e3b1991306427e918d90ec357dcedd9b05f2b75d Mon Sep 17 00:00:00 2001
From: Goodwitch68 <56366861+Goodwitch68@users.noreply.github.com>
Date: Tue, 22 Oct 2019 14:54:54 +0200
Subject: [PATCH 01/17] TYC_Hour_2

HW
---
 helloworld/TYC_Hour_2 | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 helloworld/TYC_Hour_2

diff --git a/helloworld/TYC_Hour_2 b/helloworld/TYC_Hour_2
new file mode 100644
index 0000000..888db58
--- /dev/null
+++ b/helloworld/TYC_Hour_2
@@ -0,0 +1 @@
+//Ezek szerint itt is lehet kódolni, közvetlenül?

From 16e4873ce706b7c719e767320891765bb49ef7fb Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Tue, 22 Oct 2019 15:43:32 +0200
Subject: [PATCH 02/17] H2_E2 done

---
 helloworld/H2_E2.c | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 helloworld/H2_E2.c

diff --git a/helloworld/H2_E2.c b/helloworld/H2_E2.c
new file mode 100644
index 0000000..68bb16f
--- /dev/null
+++ b/helloworld/H2_E2.c
@@ -0,0 +1,9 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+void main()
+{
+	printf ("It's fun to write my own program in C.\n");    
+	exit(0);
+	
+}
\ No newline at end of file

From 228e62fca79464882248fe25f675b031ddf525d7 Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Tue, 22 Oct 2019 15:44:02 +0200
Subject: [PATCH 03/17] H2_E3 done

---
 helloworld/H2_E3.c | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 helloworld/H2_E3.c

diff --git a/helloworld/H2_E3.c b/helloworld/H2_E3.c
new file mode 100644
index 0000000..fbd9ef7
--- /dev/null
+++ b/helloworld/H2_E3.c
@@ -0,0 +1,9 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+void main()
+{
+	printf ("\nHowdy, neighbor!\nThis is my first C program.\n");    
+	exit(0);
+	
+}
\ No newline at end of file

From 3b8491d151a96fa42e0236b582f961f01b31d544 Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Tue, 22 Oct 2019 16:22:00 +0200
Subject: [PATCH 04/17] H3_E5 done

---
 helloworld/H3_E5.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 helloworld/H3_E5.c

diff --git a/helloworld/H3_E5.c b/helloworld/H3_E5.c
new file mode 100644
index 0000000..55cb0ae
--- /dev/null
+++ b/helloworld/H3_E5.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+/* This function multiplicate two integers and returns the result */
+int integer_mult( int x, int y )
+{
+	int result;
+	result = x * y;
+	return result;
+}
+int main()
+{
+	int prod;
+	prod = integer_mult(3, 5);
+	printf("3 times 5 is %d.\n", prod);
+	return 0;
+}
\ No newline at end of file

From cc595874b3c39e9ff57fb1dfffc42f4419920a5c Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Tue, 22 Oct 2019 17:55:14 +0200
Subject: [PATCH 05/17] H4_C1 done

---
 helloworld/H4_E1.c | 7 +++++++
 1 file changed, 7 insertions(+)
 create mode 100644 helloworld/H4_E1.c

diff --git a/helloworld/H4_E1.c b/helloworld/H4_E1.c
new file mode 100644
index 0000000..9c6c601
--- /dev/null
+++ b/helloworld/H4_E1.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main()
+{
+	printf("The numeric value of Z is: %d, the same of z is: %d.", 'Z', 'z');
+	return 0;
+}
\ No newline at end of file

From e2548d6d254fe86f30aff2ab4dd40f5de5675104 Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Tue, 22 Oct 2019 17:58:11 +0200
Subject: [PATCH 06/17] H4_C2 done

---
 helloworld/H4_E2.c | 7 +++++++
 1 file changed, 7 insertions(+)
 create mode 100644 helloworld/H4_E2.c

diff --git a/helloworld/H4_E2.c b/helloworld/H4_E2.c
new file mode 100644
index 0000000..c9209b5
--- /dev/null
+++ b/helloworld/H4_E2.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main()
+{
+	printf("The ASCII value of 72 is character: %c, the 104 is character: %c.", 72, 104);
+	return 0;
+}
\ No newline at end of file

From 6bb2b864f6dda2fffb519d2985bcaaced4889ef9 Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Tue, 22 Oct 2019 18:02:51 +0200
Subject: [PATCH 07/17] H4_C4 done

---
 helloworld/H4_E4.c | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 helloworld/H4_E4.c

diff --git a/helloworld/H4_E4.c b/helloworld/H4_E4.c
new file mode 100644
index 0000000..d43b81f
--- /dev/null
+++ b/helloworld/H4_E4.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main()
+{
+	double dbl_num = 123.456;
+	printf("Floating is: %f, scientific is: %e.", dbl_num, dbl_num);
+	return 0;
+}
\ No newline at end of file

From 91d30fb647eb9b048cfc7b77237f1412f352eecb Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Tue, 22 Oct 2019 18:13:58 +0200
Subject: [PATCH 08/17] H4_C5 done

---
 helloworld/H4_E5.c | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 helloworld/H4_E5.c

diff --git a/helloworld/H4_E5.c b/helloworld/H4_E5.c
new file mode 100644
index 0000000..a5ea916
--- /dev/null
+++ b/helloworld/H4_E5.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main()
+{
+	double dbl_num = 123.456;
+	printf("The numeric value of '\n' is: %d.", '\n');
+	return 0;
+}
\ No newline at end of file

From ce56711f7a9bc7a68c417704f8d3b9320b34214b Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Wed, 23 Oct 2019 08:37:52 +0200
Subject: [PATCH 09/17] H5 is done

---
 helloworld/H5_E1.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 helloworld/H5_E1.c

diff --git a/helloworld/H5_E1.c b/helloworld/H5_E1.c
new file mode 100644
index 0000000..4cdd7c5
--- /dev/null
+++ b/helloworld/H5_E1.c
@@ -0,0 +1,29 @@
+#include <stdio.h>
+
+int main()
+{
+	//1. feladat
+	printf("%c%c%c\n",'B','y','e');
+	//2. feladat
+	int number1 =123;
+	float number2 = 123.456;
+	printf("%d\n%f\n",number1,number2);
+	printf("%-8d\n%-8f\n",number1,number2);
+	//3. feladat
+	int number3 = -15;
+	int number4 = 150;
+	int number5 =1500;
+	printf("-15 hexadecimális formában: %x,\n 150 hexadecimális alakja: %x,\n1500 hexadecimális alakja: %x\n", number3,number4, number5);
+	//4. feladat
+	int ch;
+	setbuf(stdout, NULL);
+	printf("Please type in one character:\n");
+    ch = getchar();
+    printf("The character you just entered is:\n");
+	putchar (ch);
+	
+	return 0;
+}
+
+//5. feladat
+// the header stdio.h is missing
\ No newline at end of file

From 022f5d6e58ddb8797264c6d1262156c2c45cd618 Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Thu, 24 Oct 2019 13:43:18 +0200
Subject: [PATCH 10/17] H6 done

---
 helloworld/H6_E1.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 helloworld/H6_E1.c

diff --git a/helloworld/H6_E1.c b/helloworld/H6_E1.c
new file mode 100644
index 0000000..814111b
--- /dev/null
+++ b/helloworld/H6_E1.c
@@ -0,0 +1,52 @@
+#include <stdio.h>
+
+int main()
+{
+	//1. feladat
+	//Given x = 1 and y = 3, write a program to print 
+	//out the results of these expressions: x += y, 
+	//x += -y, x -= y, x -= -y, x *= y, and x *= -y.
+	int x=1;
+	int y=3;
+	printf("x += y értéke:%d\n",x += y);
+	x=1;
+	printf("x += -y értéke:%d\n",x += (-y));
+	x=1;
+	printf("x -= y értéke:%d\n",x -= y);
+	x=1;
+	printf("x -= -y értéke:%d\n",x -= (-y));
+	x=1;
+	printf("x *= y értéke:%d\n",x *= y);
+	x=1;
+	printf("x *= -y értéke:%d\n",x *= (-y));
+
+	//2. feladat
+	//Given x = 3 and y = 6, what is the value of z after the expression
+	//z = x * y == 18 is executed?
+	// answer is '1'
+	
+	//3. feladat
+	x = 1;
+	printf("x++ produces:   %d\n", x++);
+	printf("Now x contains: %d\n", x);
+	
+	//4. feladat
+	x = 1;
+	printf("x = x++ produces: %d\n", x = x++);
+	printf("Now x contains:   %d\n", x);
+	// x returns 1, bec x=x++ means: x++ returns 1
+
+	return 0;
+}
+
+/*5. feladat
+#include <stdio.h>
+main()
+{
+   int x, y;
+   x = y = 0;
+   printf("The comparison result is: %d\n",  x = y); [x==y is the proper comparison]
+   return 0;
+}
+*/
+//setbuf(stdout, NULL);
\ No newline at end of file

From 1cf6e57ef877139867f935bd3d14d896c4d06623 Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Thu, 24 Oct 2019 15:24:17 +0200
Subject: [PATCH 11/17] H7 done

---
 helloworld/H7_E1.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 helloworld/H7_E1.c

diff --git a/helloworld/H7_E1.c b/helloworld/H7_E1.c
new file mode 100644
index 0000000..f607585
--- /dev/null
+++ b/helloworld/H7_E1.c
@@ -0,0 +1,74 @@
+#include <stdio.h>
+
+int main()
+{
+	//1.-2. feladat
+	//What is the difference between 
+	//the following two pieces of code?
+	// for (i=0, j=1; i<8; i++, j++)
+    // printf("%d  +  %d  =  %d\n", i, j, i+j);
+	//
+	//for (i=0, j=1; i<8; i++, j++);
+    //printf("%d  +  %d  =  %d\n", i, j, i+j);
+	
+	//in the line 11 there is an "empty" loop, it does not anyting 
+	
+	//2. feladat
+	//Write a program that contains the two pieces of 
+	//code shown in exercise 1, and then execute the program. 
+	//What are you going to see on the screen?
+	int i;
+	int j;
+	printf("2. feladat\n");
+	for (i=0, j=1; i<8; i++, j++)
+		printf("%d  +  %d  =  %d\n", i, j, i+j);
+	
+	
+	for (i=0, j=1; i<8; i++, j++);
+		printf("%d  +  %d  =  %d\n", i, j, i+j);
+	//the 2. loop does'nt do anything
+	
+	
+	//3. feladat
+	//Rewrite the program in Listing 7.4. This time,
+	//you want the for statement to keep looping until
+	//the user enters the character K.
+	int c;
+    setbuf(stdout, NULL);
+	printf("\n3. feladat\n");
+	printf("Enter a character:\n(enter K to exit)\n");
+    for ( c=' '; c != 'K'; ) {
+		c = getc(stdin);
+		putchar(c);
+    }
+    printf("\nOut of the for loop. Bye!\n");
+
+	
+	//4. feladat
+	//Rewrite the program in Listing 7.6 by replacing 
+	//the do-while loop with a for loop.
+	printf("\n4. feladat\n");
+	for (i = 65; i<72; i++){
+		printf("The numeric value of %c is %d.\n", i, i);
+		} 
+	
+	//5. feladat
+	//Rewrite the program in Listing 7.7. 
+	//This time, use a while loop as the outer loop 
+	//and a do-while loop as the inner loop.
+	i = 1;
+	printf("\n5. feladat\n");
+	while (i<=3) {   // outer loop 
+		printf("The start of iteration %d of the outer loop.\n", i);
+		j=1;
+		do   { 
+			printf("    Iteration %d of the inner loop.\n", j);
+			j++;
+		} while (j<=4);
+		printf("The end of iteration %d of the outer loop.\n", i);
+		i++;
+	}
+	return 0;
+}
+
+//setbuf(stdout, NULL);
\ No newline at end of file

From c6c06c16e1a46222abb2041b917cded4752be975 Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Fri, 25 Oct 2019 10:35:42 +0200
Subject: [PATCH 12/17] H4_E5 done. Ezt eddig nem commitoltam volna?

---
 helloworld/H4_E5.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/helloworld/H4_E5.c b/helloworld/H4_E5.c
index a5ea916..e9f8d1a 100644
--- a/helloworld/H4_E5.c
+++ b/helloworld/H4_E5.c
@@ -2,7 +2,6 @@
 
 int main()
 {
-	double dbl_num = 123.456;
 	printf("The numeric value of '\n' is: %d.", '\n');
 	return 0;
 }
\ No newline at end of file

From 7cc5fab9f86862c3a2eccc7085c7ae8c9c437bb4 Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Fri, 25 Oct 2019 10:55:58 +0200
Subject: [PATCH 13/17] =?UTF-8?q?Ez=20csak=20egy=20k=C3=ADs=C3=A9rlet=20vo?=
 =?UTF-8?q?lt...?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 helloworld/TYC_Hour_2 | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/helloworld/TYC_Hour_2 b/helloworld/TYC_Hour_2
index 888db58..48363a5 100644
--- a/helloworld/TYC_Hour_2
+++ b/helloworld/TYC_Hour_2
@@ -1 +1,9 @@
-//Ezek szerint itt is lehet kódolni, közvetlenül?
+#include <stdlib.h>
+#include <stdio.h>
+
+void main()
+{
+	printf ("Howdy, neighbor! This is my first C program.\n");    
+	exit(0);
+	
+}
\ No newline at end of file

From 5c7a41ab82858cd064b3146f1221d6ae8e80d2a5 Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Sat, 26 Oct 2019 20:12:26 +0200
Subject: [PATCH 14/17] code review session

---
 helloworld/.c              |  8 ++++++++
 helloworld/H2_E2.c         |  5 ++---
 helloworld/H2_E3.c         |  8 +++-----
 helloworld/H3_E5.c         | 15 +++++----------
 helloworld/H4_E4.c         |  3 +--
 helloworld/H5_E1.c         | 24 ++++++++++++++----------
 helloworld/H7_E1.c         | 35 +++++++++++++++++------------------
 helloworld/ascii_bitwise.c |  7 +++++++
 helloworld/xpp.c           | 27 +++++++++++++++++++++++++++
 9 files changed, 84 insertions(+), 48 deletions(-)
 create mode 100644 helloworld/.c
 create mode 100644 helloworld/ascii_bitwise.c
 create mode 100644 helloworld/xpp.c

diff --git a/helloworld/.c b/helloworld/.c
new file mode 100644
index 0000000..cb9c3d9
--- /dev/null
+++ b/helloworld/.c
@@ -0,0 +1,8 @@
+1:  /* 02L01.c: This is my first C program */
+2:  #include <stdio.h>
+3:
+4:  main()
+5:  {
+6:     printf ("Howdy, neighbor! This is my first C program.\n");
+7:     return 0;
+8:  }
\ No newline at end of file
diff --git a/helloworld/H2_E2.c b/helloworld/H2_E2.c
index 68bb16f..9129de2 100644
--- a/helloworld/H2_E2.c
+++ b/helloworld/H2_E2.c
@@ -1,9 +1,8 @@
 #include <stdlib.h>
 #include <stdio.h>
 
-void main()
-{
-	printf ("It's fun to write my own program in C.\n");    
+void main() {
+	printf("It's fun to write my own program in C.\n");
 	exit(0);
 	
 }
\ No newline at end of file
diff --git a/helloworld/H2_E3.c b/helloworld/H2_E3.c
index fbd9ef7..256ecd2 100644
--- a/helloworld/H2_E3.c
+++ b/helloworld/H2_E3.c
@@ -1,9 +1,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 
-void main()
-{
-	printf ("\nHowdy, neighbor!\nThis is my first C program.\n");    
-	exit(0);
-	
+void main() {
+	printf("\nHowdy, neighbor!\nThis is my first C program.\n");
+	return 0;
 }
\ No newline at end of file
diff --git a/helloworld/H3_E5.c b/helloworld/H3_E5.c
index 55cb0ae..5b97dcf 100644
--- a/helloworld/H3_E5.c
+++ b/helloworld/H3_E5.c
@@ -1,15 +1,10 @@
 #include <stdio.h>
 /* This function multiplicate two integers and returns the result */
-int integer_mult( int x, int y )
-{
-	int result;
-	result = x * y;
-	return result;
+int integer_mult(int x, int y) {
+	return x * y;
 }
-int main()
-{
-	int prod;
-	prod = integer_mult(3, 5);
-	printf("3 times 5 is %d.\n", prod);
+
+int main() {
+	printf("3 times 5 is %d.\n", integer_mult(3, 5));
 	return 0;
 }
\ No newline at end of file
diff --git a/helloworld/H4_E4.c b/helloworld/H4_E4.c
index d43b81f..8ec0ebb 100644
--- a/helloworld/H4_E4.c
+++ b/helloworld/H4_E4.c
@@ -1,7 +1,6 @@
 #include <stdio.h>
 
-int main()
-{
+int main() {
 	double dbl_num = 123.456;
 	printf("Floating is: %f, scientific is: %e.", dbl_num, dbl_num);
 	return 0;
diff --git a/helloworld/H5_E1.c b/helloworld/H5_E1.c
index 4cdd7c5..9ee1565 100644
--- a/helloworld/H5_E1.c
+++ b/helloworld/H5_E1.c
@@ -1,25 +1,29 @@
 #include <stdio.h>
 
-int main()
-{
+int main() {
 	//1. feladat
-	printf("%c%c%c\n",'B','y','e');
+	printf("%c%c%c\n", 'B', 'y', 'e');
 	//2. feladat
-	int number1 =123;
+	int number1 = 123;
 	float number2 = 123.456;
-	printf("%d\n%f\n",number1,number2);
-	printf("%-8d\n%-8f\n",number1,number2);
+	printf("%d\n%f\n", number1, number2);
+	printf("%-8d\n%-8f\n", number1, number2);
 	//3. feladat
 	int number3 = -15;
 	int number4 = 150;
-	int number5 =1500;
-	printf("-15 hexadecimális formában: %x,\n 150 hexadecimális alakja: %x,\n1500 hexadecimális alakja: %x\n", number3,number4, number5);
+	int number5 = 1500;
+	printf(
+		"-15 hexadecimális formában: %x,\n 150 hexadecimális alakja: %x,\n1500 hexadecimális alakja: %x\n",
+		number3,
+		number4,
+		number5
+	);
 	//4. feladat
 	int ch;
 	setbuf(stdout, NULL);
 	printf("Please type in one character:\n");
-    ch = getchar();
-    printf("The character you just entered is:\n");
+	ch = getchar();
+	printf("The character you just entered is:\n");
 	putchar (ch);
 	
 	return 0;
diff --git a/helloworld/H7_E1.c b/helloworld/H7_E1.c
index f607585..81ebc25 100644
--- a/helloworld/H7_E1.c
+++ b/helloworld/H7_E1.c
@@ -1,15 +1,14 @@
 #include <stdio.h>
 
-int main()
-{
+int main() {
 	//1.-2. feladat
 	//What is the difference between 
 	//the following two pieces of code?
 	// for (i=0, j=1; i<8; i++, j++)
-    // printf("%d  +  %d  =  %d\n", i, j, i+j);
+	// printf("%d  +  %d  =  %d\n", i, j, i+j);
 	//
 	//for (i=0, j=1; i<8; i++, j++);
-    //printf("%d  +  %d  =  %d\n", i, j, i+j);
+	//printf("%d  +  %d  =  %d\n", i, j, i+j);
 	
 	//in the line 11 there is an "empty" loop, it does not anyting 
 	
@@ -21,11 +20,11 @@ int main()
 	int j;
 	printf("2. feladat\n");
 	for (i=0, j=1; i<8; i++, j++)
-		printf("%d  +  %d  =  %d\n", i, j, i+j);
+		printf("%d + %d  = %d\n", i, j, i+j);
 	
 	
 	for (i=0, j=1; i<8; i++, j++);
-		printf("%d  +  %d  =  %d\n", i, j, i+j);
+		printf("%d + %d = %d\n", i, j, i+j);
 	//the 2. loop does'nt do anything
 	
 	
@@ -34,23 +33,23 @@ int main()
 	//you want the for statement to keep looping until
 	//the user enters the character K.
 	int c;
-    setbuf(stdout, NULL);
+	setbuf(stdout, NULL);
 	printf("\n3. feladat\n");
 	printf("Enter a character:\n(enter K to exit)\n");
-    for ( c=' '; c != 'K'; ) {
-		c = getc(stdin);
+	c = ' ';
+	while (c = getc(stdin) != 'K') {
 		putchar(c);
-    }
-    printf("\nOut of the for loop. Bye!\n");
-
+	}
+	printf("\nOut of the for loop. Bye!\n");
+	
 	
 	//4. feladat
 	//Rewrite the program in Listing 7.6 by replacing 
 	//the do-while loop with a for loop.
 	printf("\n4. feladat\n");
-	for (i = 65; i<72; i++){
+	for (i = 65; i < 72; i++) {
 		printf("The numeric value of %c is %d.\n", i, i);
-		} 
+	}
 	
 	//5. feladat
 	//Rewrite the program in Listing 7.7. 
@@ -58,13 +57,13 @@ int main()
 	//and a do-while loop as the inner loop.
 	i = 1;
 	printf("\n5. feladat\n");
-	while (i<=3) {   // outer loop 
+	while (i <= 3) {   // outer loop 
 		printf("The start of iteration %d of the outer loop.\n", i);
-		j=1;
-		do   { 
+		j = 1;
+		do {
 			printf("    Iteration %d of the inner loop.\n", j);
 			j++;
-		} while (j<=4);
+		} while (j <= 4);
 		printf("The end of iteration %d of the outer loop.\n", i);
 		i++;
 	}
diff --git a/helloworld/ascii_bitwise.c b/helloworld/ascii_bitwise.c
new file mode 100644
index 0000000..c9db2a7
--- /dev/null
+++ b/helloworld/ascii_bitwise.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main(){
+	//printf("%c%c%c\n",'B'^0b00100000, 'y'^0b00100000, 'e'^0b00100000);
+	puts("%c%c%c\n", 'e');
+	return 0;
+}
\ No newline at end of file
diff --git a/helloworld/xpp.c b/helloworld/xpp.c
new file mode 100644
index 0000000..111d02c
--- /dev/null
+++ b/helloworld/xpp.c
@@ -0,0 +1,27 @@
+#include <stdio.h>
+
+int main()
+{
+	int x = 1;
+	printf("x = x + 1 értéke:%d\n",x = x + 1);
+	printf("Now x contains: %d\n", x);
+
+	x = 1;
+	printf("x++ produces:   %d\n", x++);
+	printf("Now x contains: %d\n", x);
+
+
+	return 0;
+}
+
+/*5. feladat
+#include <stdio.h>
+main()
+{
+   int x, y;
+   x = y = 0;
+   printf("The comparison result is: %d\n",  x = y); [x==y is the proper comparison]
+   return 0;
+}
+*/
+//setbuf(stdout, NULL);
\ No newline at end of file

From d99657cff0ae47fb08207c986644874c54f73f38 Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Fri, 8 Nov 2019 18:21:25 +0100
Subject: [PATCH 15/17] Cleanup H4, H6, H7

---
 helloworld/H4_E1.c |  3 +--
 helloworld/H4_E2.c |  3 +--
 helloworld/H4_E5.c |  3 +--
 helloworld/H6_E1.c | 29 ++++++++++++++---------------
 helloworld/H7_E1.c |  9 ++++-----
 5 files changed, 21 insertions(+), 26 deletions(-)

diff --git a/helloworld/H4_E1.c b/helloworld/H4_E1.c
index 9c6c601..ade56cb 100644
--- a/helloworld/H4_E1.c
+++ b/helloworld/H4_E1.c
@@ -1,7 +1,6 @@
 #include <stdio.h>
 
-int main()
-{
+int main() {
 	printf("The numeric value of Z is: %d, the same of z is: %d.", 'Z', 'z');
 	return 0;
 }
\ No newline at end of file
diff --git a/helloworld/H4_E2.c b/helloworld/H4_E2.c
index c9209b5..a131fd0 100644
--- a/helloworld/H4_E2.c
+++ b/helloworld/H4_E2.c
@@ -1,7 +1,6 @@
 #include <stdio.h>
 
-int main()
-{
+int main() {
 	printf("The ASCII value of 72 is character: %c, the 104 is character: %c.", 72, 104);
 	return 0;
 }
\ No newline at end of file
diff --git a/helloworld/H4_E5.c b/helloworld/H4_E5.c
index e9f8d1a..7c4986c 100644
--- a/helloworld/H4_E5.c
+++ b/helloworld/H4_E5.c
@@ -1,7 +1,6 @@
 #include <stdio.h>
 
-int main()
-{
+int main() {
 	printf("The numeric value of '\n' is: %d.", '\n');
 	return 0;
 }
\ No newline at end of file
diff --git a/helloworld/H6_E1.c b/helloworld/H6_E1.c
index 814111b..c4f8679 100644
--- a/helloworld/H6_E1.c
+++ b/helloworld/H6_E1.c
@@ -1,24 +1,23 @@
 #include <stdio.h>
 
-int main()
-{
+int main() {
 	//1. feladat
 	//Given x = 1 and y = 3, write a program to print 
 	//out the results of these expressions: x += y, 
 	//x += -y, x -= y, x -= -y, x *= y, and x *= -y.
-	int x=1;
-	int y=3;
-	printf("x += y értéke:%d\n",x += y);
-	x=1;
-	printf("x += -y értéke:%d\n",x += (-y));
-	x=1;
-	printf("x -= y értéke:%d\n",x -= y);
-	x=1;
-	printf("x -= -y értéke:%d\n",x -= (-y));
-	x=1;
-	printf("x *= y értéke:%d\n",x *= y);
-	x=1;
-	printf("x *= -y értéke:%d\n",x *= (-y));
+	int x = 1;
+	int y = 3;
+	printf("x += y értéke:%d\n", x += y);
+	x = 1;
+	printf("x += -y értéke:%d\n", x += (-y));
+	x = 1;
+	printf("x -= y értéke:%d\n", x -= y);
+	x = 1;
+	printf("x -= -y értéke:%d\n", x -= (-y));
+	x = 1;
+	printf("x *= y értéke:%d\n", x *= y);
+	x = 1;
+	printf("x *= -y értéke:%d\n", x *= (-y));
 
 	//2. feladat
 	//Given x = 3 and y = 6, what is the value of z after the expression
diff --git a/helloworld/H7_E1.c b/helloworld/H7_E1.c
index 81ebc25..f847cec 100644
--- a/helloworld/H7_E1.c
+++ b/helloworld/H7_E1.c
@@ -19,14 +19,13 @@ int main() {
 	int i;
 	int j;
 	printf("2. feladat\n");
-	for (i=0, j=1; i<8; i++, j++)
-		printf("%d + %d  = %d\n", i, j, i+j);
+	for (i = 0, j = 1; i < 8; i++, j++)
+		printf("%d + %d = %d\n", i, j, i+j);
 	
 	
-	for (i=0, j=1; i<8; i++, j++);
+	for (i = 0, j = 1; i < 8; i++, j++);
 		printf("%d + %d = %d\n", i, j, i+j);
-	//the 2. loop does'nt do anything
-	
+	//the 2. loop doesn't do anything
 	
 	//3. feladat
 	//Rewrite the program in Listing 7.4. This time,

From 3139052d966f74d794fe139b56074897f023fe22 Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Fri, 8 Nov 2019 18:27:18 +0100
Subject: [PATCH 16/17] Delete TYC_Hour_2

---
 helloworld/TYC_Hour_2 | 9 ---------
 1 file changed, 9 deletions(-)
 delete mode 100644 helloworld/TYC_Hour_2

diff --git a/helloworld/TYC_Hour_2 b/helloworld/TYC_Hour_2
deleted file mode 100644
index 48363a5..0000000
--- a/helloworld/TYC_Hour_2
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <stdlib.h>
-#include <stdio.h>
-
-void main()
-{
-	printf ("Howdy, neighbor! This is my first C program.\n");    
-	exit(0);
-	
-}
\ No newline at end of file

From 28a54a5cee53bb40799ed0993b32ee640a2aea81 Mon Sep 17 00:00:00 2001
From: Goodwitch68 on AcerS7 <56366861+Goodwitch68@users.noreply.github.com>
Date: Fri, 8 Nov 2019 18:33:11 +0100
Subject: [PATCH 17/17] H7_E1 delete useless comment

---
 helloworld/H7_E1.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/helloworld/H7_E1.c b/helloworld/H7_E1.c
index f847cec..d26437a 100644
--- a/helloworld/H7_E1.c
+++ b/helloworld/H7_E1.c
@@ -69,4 +69,3 @@ int main() {
 	return 0;
 }
 
-//setbuf(stdout, NULL);
\ No newline at end of file