Ds lab program 1

program1.c

@@ -0,0 +1,85 @@
+#include<stdio.h>
+int a[20],n,ele,i,pos;	
+
+void create()			
+//creating an array
+{
+printf("\nEnter the size of the array elements:\t");
+scanf("%d",&n);
+printf("\nEnter the elements for the array:\n");
+for(i=0;i<n;i++)
+scanf("%d",&a[i]);
+}
+
+void display()							//display array elements
+{
+printf("\nThe array elements are: \n");
+for(i=0;i<n;i++)
+printf("%d \t",a[i]);
+}
+
+void insert_ele()				//inserting an element at specified position
+{
+printf("\nEnter the position for the new element:\t");
+scanf("%d",&pos);
+
+printf("\nEnter the element to be inserted :\t");
+scanf("%d",&ele);
+
+
+if(pos> (n+1)||pos<=0)
+{
+printf("invalid position\n");
+return;
+}
+
+for(i=n-1; i>=pos-1; i--)
+a[i+1]=a[i];
+a[pos-1]=ele;
+n++;
+}
+
+void delete_ele()			//deleting an array element
+{
+printf("\nEnter the position of the element to be deleted:\t");
+scanf("%d",&pos);
+if(pos>=n+1||pos<=0)
+{
+printf("invalid position\n");
+return;
+}
+printf("element deleted is %d", a[pos-1]);
+for(i=pos-1; i<n-1; i++)
+a[i]=a[i+1];
+n--;
+}
+
+void main()
+{
+int ch;
+do
+{
+printf(" \n -------- MENU -----------  \n");
+printf("1:CREATE	  2:DISPLAY     3:INSERT    4:DELETE\n");
+printf("-----------------------");
+
+printf("\nENTER YOUR CHOICE:\t");
+scanf("%d",&ch);
+switch(ch)
+{
+case 1: create();
+	break;
+
+case 2: display();
+	break;
+
+case 3: insert_ele();
+	break;
+
+case 4: delete_ele();
+	break;
+
+default: printf("invalid choice\n");
+}
+} while(ch<=4);
+}