TheAlgorithms-C/project_euler/problem_6/sol.c
2020-06-05 12:20:25 -04:00

20 lines
329 B
C

/**
* \file
* \brief [Problem 6](https://projecteuler.net/problem=6) solution
*/
#include <stdio.h>
/** Main function */
int main(void)
{
unsigned s1 = 0, s2 = 0, i;
for (i = 1; i <= 100; i++)
{
s1 += i * i;
s2 += i;
}
unsigned ans = s2 * s2 - s1;
printf("%u\n", ans);
return 0;
}