/C++/How to execute a command and get return code stdout and stderr of command in C++

How to execute a command and get return code stdout and stderr of command in C++

std::string exec(const char* cmd) {
    std::array<char, 128> buffer;
    std::string result;

    auto pipe = popen(cmd, "r"); // get rid of shared_ptr

    if (!pipe) throw std::runtime_error("popen() failed!");

    while (!feof(pipe)) {
        if (fgets(buffer.data(), 128, pipe) != nullptr)
            result += buffer.data();
    }

    auto rc = pclose(pipe);

    if (rc == EXIT_SUCCESS) { // == 0

    } else if (rc == EXIT_FAILURE) {  // EXIT_FAILURE is not used by all programs, maybe needs some adaptation.

    }
    return result;
}

Source: stackoverflow.com

Similar codes

0 vote160 views1 answer
Raspberry pi mount external hard drive
C++
0 vote177 views1 answer
Z transfrom mathlab
C++
0 vote124 views1 answer
C++ include a file in another directory
C++
1 vote199 views1 answer
Priority queue ordered by second element
C++
3 votes159 views5 answers
Euclid algorithm
C++
0 vote228 views1 answer
C++ put a function in a other thread
C++
0 vote180 views4 answers
C++ template
C++
0 vote184 views1 answer
Convert c code to java online free
C++
-1 vote170 views10 answers
Time complexity calculator online
C++
18 votes161 views5 answers
C++ random number
C++