题目分析

此题目考察了字符串处理的相关知识点。

代码实现

#include<iostream>
#include<string>
#include<algorithm>
using namespace std;
string s;
char a,b;
int main(){
	cin>>s>>a>>b;
	for(int i=0;i<s.length();i++)s[i]=(s[i]==a)?b:s[i];
	cout<<s;
    return 0;
}

记得给五星好评哦喵~ 谢谢客官啦~

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#include<bits/stdc++.h>
using namespace std;
string s;
int main(){
char ch1,ch2;
cin>>s>>ch1>>ch2;
for(int i=0; i<s.size();i++){
	if(s[i]==ch1){
		s[i]=ch2;
	}
}
cout<<s;
	return 0;
}

#include<bits/stdc++.h> using namespace std;
int main(){ string s; char ch1,ch2; cin>>s>>ch1>>ch2; for(int i=0 ;i<s.size();i++){ if(s[i]==ch1){ s[i]=ch2; } } cout<<s; return 0; }

#include<bits/stdc++.h> using namespace std; string s; int main(){ char ch1,ch2; cin>>s>>ch1>>ch2; for(int i = 0;i<s.length();i++){ if(s[i]==ch1){ s[i]=ch2; } } cout<<s; return 0; }