#include <time.h>
clock_t start, finish;
double Total_time;
start = clock();
// task
finish = clock();
Total_time = (double)(finish-start)/CLOCKS_PER_SEC;
printf( "%f seconds\n", Total_time);
#include <time.h>
clock_t start, finish;
double Total_time;
start = clock();
// task
finish = clock();
Total_time = (double)(finish-start)/CLOCKS_PER_SEC;
printf( "%f seconds\n", Total_time);