9815: 查找替换

admin

题目描述
把母串中的要替换的的字符串，替换成新的串，注意是全部替换
输入
三行分别是原串，需要替换串，替换串
输出
被替换好的字符串


输入
dog is stupid dog is stupid
dog
pigs
输出
pigs is stupid pigs is stupid

admin

[C++] 纯文本查看 复制代码

#include<bits/stdc++.h>
using namespace std;
int  main()
{
    string str1,str2,str3;
    int n,m;
    
    getline(cin,str1);
    cin>>str2>>str3;
    
    //cout<<str1<<endl;
	//cout<<str2<<endl;
	//cout<<str3<<endl;

   n=str1.find(str2);
   while(n != -1) {
    
    str1.replace(n, str2.length(), str3);
    n=str1.find(str2);
	}
    
    cout<<str1<<endl;
    
    return 0;
}