c++里面的string的repalce函数怎么用？

Question

题目是，用字符串c替换掉字符串a中所有的b片段。#include <iostream>#include <string>#include <stdio.h>int main() {std::string a, b, c;std::cin >> a >> b >> c;while (a.find(b) != -1) {int i = a.find(b);a = a.replace(b, c);}std::cout << a << std::endl;return 0;} 为什么replace那行通不过编译？谢谢指点哦。

Answer 1

#include <iostream>
#include <string>
#include <algorithm>
#include <stdio.h>
int main() {
std::string a, b, c;
std::cin >> a >> b >> c;
std::string::size_type len=b.length();
while (a.find(b) != -1) {
std::string::size_type i = a.find(b);
a.replace(i,len,c);
}
std::cout << a << std::endl;
return 0;
}