#include <stdio.h> #include <time.h> int main() { clock_t start = clock(); long long sum = 0; for (int i = 0; i < 10000000; i++) { sum += i; } clock_t end = clock(); double seconds = (double)(end - start) / CLOCKS_PER_SEC; printf("Sum: %lld\n", sum); printf("Time: %f seconds\n", seconds); return 0; }