题解 2853: 字符替换

解题思路:

注意事项:

参考代码:

#include<iostream>

using namespace std;

#include<string>

int main()

{

string a;

cin >> a;

int size = a.size();

char b, c;

cin >> b >> c;

for (int i = 0; i < size; i++)

{

if (a[i] == b)

{

a[i] = c;

}

cout << a[i];

}

return 0;

}