#include <stdio.h>   // printf

#include <stdlib.h>  // EXIT_SUCCESS



// = sum of integers from 1 to max

int sumTo(int max) {

  int i, sum = 0;



  for (i = 1; i <= max; i++) {

    sum += i;

  }

  return sum;

}



int main(int argc, char** argv) {

  printf("sumTo(5) is: %d\n", sumTo(5));

  return EXIT_SUCCESS;

}