/* 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); }