#include <time.h\>
clock_t start;
clock_t diff;
clock_t end;
start= clock();
various algorithm;
end = clock();
diff = end - start;
print diff;
#include <time.h\>
clock_t start;
clock_t diff;
clock_t end;
start= clock();
various algorithm;
end = clock();
diff = end - start;
print diff;