Can i give a parameters on "cmd console?"-CodePudding

I want to utilize CMD console. For example If a.cpp is like below

int main(int argc, char* argv[]) {
    for (int i = 0; i < argc; i  ) {
        cout << "argv : " << argv[i] << endl;
    }

    string path = "c:\\test"; 
    
    vector<fs::path> v;
    vector<fs::path>::iterator it;

    for (auto& entry : fs::recursive_directory_iterator(path))
        v.push_back(entry.path());
    
    for (it = v.begin(); it != v.end();   it) {
        cout << *it << endl;
    }

and if I want to run a.exe by CMD console it can be

C:\users> a.exe

and the result would be

"c:\\test\\test1"
"c:\\test\\test1\\test2"
"c:\\test\\test1\\test2\\lastdir"
"c:\\test\\test1\\test2\\lastdir2"
"c:\\test\\test1_1"
"c:\\test\\test1_1\\test1_txt.txt"

But What if I want to change path by CMD console

For example

C:\users> a.exe c:\\temp

and outputs will be

"c:\\temp\\temp_dir"
"c:\\temp\\temp_dir\\temp.txt" 
"c:\\temp\\temp_dir2"

CodePudding user response：

You can do this portably since C 17 using

#include <filesystem>
std::filesystem::current_path(std::filesystem::path(path));