字符串替换

ゝ一世哀愁。 2022-09-30 13:56 242阅读 0赞

字符串替换

将文本文件中指定的字符串替换成新字符串。 由于目前的OJ系统暂时不能支持用户读入文件，我们编写程序从键盘输入文件中的内容，当输入的一行为end时，表示结束。end后面有两个字符串，要求用第二个字符串替换文本中所有的第一个字符串。

### 输入格式: ###

Xi’an Institute of Posts and Telecommunications is co-designed and implemented by the People’s Government of Shaanxi Province and the Ministry of Industry and Information Technology. The Institute is located in Xi’an, a historic city in Northwest China, famous for its magnificent ancient culture.

end （表示结束）

Institute （第一个字符串，要求用第二个字符串替换）

University （第二个字符串）

### 输出格式: ###

Xi’an University of Posts and Telecommunications is co-designed and implemented by the People’s Government of Shaanxi Province and the Ministry of Industry and Information Technology.The University is located in Xi’an, a historic city in Northwest China, famous for its magnificent ancient culture.

### 输入样例: ###

Xi’an Institute of Posts and Telecommunications is co-designed and implemented by the People’s Government of Shaanxi Province and the Ministry of Industry and Information Technology.
    The Institute is located in Xi’an, a historic city in Northwest China, famous for its magnificent ancient culture.
    end
    Institute
    University

### 输出样例: ###

代码：

#include<iostream>
    #include<cstring>
    using namespace std;
    int main()
    {
     string a,m,b,c;
     int found,i;
     getline(cin,a);
     while(1)
     {getline(cin,m);
     i=m.compare("end");
     if(i==0)
     {
     break;
     } 
     a+='\n';
     a+=m; 
     }
     a+='\n';
     cin>>b;
     cin>>c;
     
     found=a.find(b);
     while(found !=-1)
     {
     a.replace(found,b.length(),c);
     found=a.find(b,found+1);
     }
     cout<<a;
     return 0;
    }