/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 vote328 views2 answers
Basic Makefile C++
C++
0 vote326 views1 answer
C++ allocate dynamic with initial values
C++
0 vote288 views1 answer
How to add an element to std::map
C++
9 votes328 views3 answers
Throw exception c++
C++
0 vote339 views1 answer
Fill 2-dimensional array with value
C++
0 vote305 views1 answer
Print hola mundo
C++
6 votes300 views2 answers
Precision c++
C++
0 vote284 views1 answer
C++ include <> vs ""
C++
4 votes311 views3 answers
GCD in cpp
C++
1 vote310 views1 answer
Comentar todas linhas de uma vez vs code
C++