gistfile1.txt

Output:
std::cout bez sync_with_stdio(0)

real	0m0.084s
user	0m0.083s
sys	0m0.000s

std::cout z sync_with_stdio(0)

real	0m0.078s
user	0m0.078s
sys	0m0.000s

printf()

real	0m0.106s
user	0m0.106s
sys	0m0.000s

Output:
std::cin bez sync_with_stdio(0)

real	0m0.016s
user	0m0.016s
sys	0m0.000s

std::cin z sync_with_stdio(0)

real	0m0.018s
user	0m0.018s
sys	0m0.000s

scanf()
test.cpp: In function ‘int main()’:
test.cpp:2:75: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
 int main(){ int test;  for(int i = 0; i < 1000000; i++)  { scanf("%d", &i);} return 0;}
                                                                           ^

real	0m0.222s
user	0m0.077s
sys	0m0.145s