How to Get the Current Directory in C ?

Retrieving the Current Directory

Getting the current directory is a frequent task in programming. For instance, suppose you want to create a file in the same directory where the executable is running. To do this, you need to obtain the current directory's path.

However, when using the GetCurrentDirectory() function as shown below:

LPTSTR NPath = NULL;
DWORD a = GetCurrentDirectory(MAX_PATH, NPath);
HANDLE hNewFile = CreateFile(NPath, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

you may encounter an exception. Instead of GetCurrentDirectory(), you should use GetModuleFileName() to retrieve the executable path.

TCHAR buffer[MAX_PATH] = { 0 };
GetModuleFileName(NULL, buffer, MAX_PATH);

For obtaining the directory path without the file name, you can employ the following C function:

#include <windows.h>
#include <string>
#include <iostream>

std::wstring ExePath() {
    TCHAR buffer[MAX_PATH] = { 0 };
    GetModuleFileName(NULL, buffer, MAX_PATH);
    std::wstring::size_type pos = std::wstring(buffer).find_last_of(L"\/");
    return std::wstring(buffer).substr(0, pos);
}

int main() {
    std::cout << "my directory is " << ExePath() << "\n";
}

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