C program to display backward branching using goto statement.

Backward branching using goto.

Syntax-

Statement(s);

Label:

Statement(s);

.

.

goto Label;

Example-

C program to calculate squareroot of given number.

#include<stdio.h>

#include<conio.h>

#include<math.h>

void main(){

int n;

float s;

clrscr();

XYZ:

printf("Enter a positive integer\n");

scanf("%d",&n);

if (n<=0) goto XYZ;

s=sqrt(n);

printf("sqrt of %d = %f\n",n,s);

getch();

}