/* File name 2-3.c. A simple example of the FOR loop */
#include <stdio.h>
main()
{
int i; /* i = 0, 1, ... , 5 */
int sum;
sum = 0; /* Initialize the variable sum. */
for (i = 0; i < 5; i++) { /* for loop. */
sum = sum + i;
}
printf("sum = %d\n", sum);
}