/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 vote205 views1 answer
Stoi() c++
C++
1 vote175 views1 answer
Binary exponentiation
C++
0 vote188 views1 answer
Glm has no member value_ptr
C++
0 vote173 views1 answer
Count bit 1 c++
C++
1 vote199 views1 answer
Shout sharkest
C++
4 votes185 views2 answers
C++ initialize a vector
C++
0 vote198 views1 answer
Error: ‘CV_WINDOW_AUTOSIZE’ was not declared in this scope
C++
3 votes196 views4 answers
Or in cpp
C++
0 vote228 views1 answer
Convert unsigned long to string c++
C++
0 vote177 views1 answer
Number of characters in string
C++