可以不用 switch case 语句

我感觉用 if 语句更快呀

#include <iostream>
using namespace std;

int main () {
int zzz;
cin >> zzz;
zzz = ( zzz + 1) % 7;
if (zzz == 1) cout << "monday";
if (zzz == 2) cout << "tuesday";
if (zzz == 3) cout << "wednesday";
if (zzz == 4) cout << "thursday";
if (zzz == 5) cout << "friday";
if (zzz == 6) cout << "saturday";
if (zzz == 0) cout << "sunday";
}