输入一个整数然后以英文输出

#include<iostream>
#include<String>
using namespace std;

int main()
{
    string str;
    cout<<"请输入数字：";
    cin>>str;
    for(int i=0; i<str.size() ; i++)
    {
        switch(str[i]){
            case '0':
                cout<<"zero\t";
                break;
           case '1':
                cout<<"one\t";
                break;
            case '2':
                cout<<"two\t";
                break;
            case '3':
                cout<<"three\t";
                break;
            case '4':
                cout<<"four\t";
                break;
            case '5':
                cout<<"five\t";
                break;
            case '6':
                cout<<"six\t";
                break;
            case '7':
                cout<<"seven\t";
                break;
            case '8':
                cout<<"eight\t";
                break;
            case '9':
                cout<<"nine\t";
                break;
        }
    }
   
}

嗯，编得好啊，没有问题！为什么你们编程输入时不会printf函数啊？输出也不会scanf?

2楼的运行出错啊

恩，少个default的判断语句。