goto statement in C

The goto statement allows us to transfer control of the program to the specified label.

Syntax of goto Statement

goto label;
... .. ...
... .. ...
label:
statement;

The label is an identifier. When the goto statement is encountered, the control of the program jumps to label: and starts executing the code.

Example: goto Statement

// Program to calculate the sum and average of positive numbers

// If the user enters a negative number, the sum and average are displayed.

#include <stdio.h>

int main() {

   const int maxInput = 50;

   int i, num, sum;

   double  average;

   sum=0;

   for (i = 1; i <= maxInput; ++i) {

      printf("%d. Enter a number: ", i);

      scanf("%d", &num);

      // go to jump if the user enters a negative number

      if (num < 0) {

         goto jump;

      }

      sum += num;

   }

jump:

   average = sum / (i - 1);

   printf("Sum = %d\n", sum);

   printf("Average = %.2f", average);

   return 0;

}

OUTPUT:

1. Enter a number: 5
2. Enter a number: 10
3. Enter a number: 15
4. Enter a number: 20
5. Enter a number: 25
6. Enter a number: -1

Sum = 75

Average = 15.00