#include <time.h>
#include <math.h>

int main(const int argc, const char* argv) {
    clock_t t;
    float f = 2.0f;
    float s1, s2;
    
    t = clock();
    for(int i=0;i<100000000;i++) {
        s1 = powf(f, 2);
    }
    t  = clock() - t;
    s1 = (float)t / CLOCKS_PER_SEC;

    t = clock();
    for(int i=0;i<100000000;i++) {
        s2 = f * f;
    }
    t = clock() - t;
    s2 = (float)t / CLOCKS_PER_SEC;
    return 0;
}