羅暐傑

1. #include<iostream>
   
2. #include<cstdlib>
   
3. #include<string>
   
4. using namespace std;
   
5. 
   
6. int main() {
   
7.     string str = "9876543210";
   
8.     cout << "原字串：" << str << endl;
   
9.     cout<<str.substr(5)<<endl;
   
10.     cout<<str.substr(2)<<endl;  
    
11.     cout<<str.substr(3,3)<<endl;  
    
12.     cout<<str.substr(7,1)<<endl;
    
13.     system("pause");
    
14.     return 0;
    
15. }

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