根据输入数字判断是星期几

#include <iostream>
using namespace std;
int main()
{    
int num;        // 从命令行读入一个int型数值    // 这个数取自测试集的输入    cin >> num; 
switch(num)
{            
case 0:            
printf("Sunday\n");            
break;        
case 1:            
printf("Monday\n");            
break;        
case 2:            
printf("Tuesday\n");            
break;        
case 3:            
printf("Wednesday\n");            
break;        
case 4:            
printf("Thursday\n");            
break;        
case 5:            
printf("Friday\n");            
break;        
case 6:            
printf("Saturday\n");            
break;        
default:            
printf("Error\n");        
}
}