C++ 字符串删除指定字符

#include <iostream>
#include <string>

int main() {
    std::string str;
    char c;
    std::cin >> str;
    std::cin >> c;

    std::string result = "";
    for (int i = 0; i < str.length(); i++) {
        if (str[i] != c) {
            result += str[i];
        }
    }

    std::cout << result << std::endl;

    return 0;
}