有木有大佬告诉我为什么在这 printf 比 cout 效率低 (printf about 0.7 cout about 0.6 )

#include<bits/stdc++.h>
using namespace std;

int main(){
	int n=1;
	while(n<=10000){
		if(n%2!=0){
			printf("%d",n);
			//cout<<n;
		}
		n++;
	} 
	return 0;
}

感激不尽