cout打印字符串变量无法通过构建

Question

Could any one help me to figure out which the following code cannot build successfully:

#include <iostream>

int main(void){

    std::string str1("sfsfasfdsdf");
    std::cout << str1 << std::endl;
    return 1;
}

Thanks.

Answer 1

You have to include std::string header:

#include <string>

EDIT : According to @ShafikYaghmour's comments, include iostream sometimes brings in string , but it may not be the case for you if you only have the posted code.