#include <limits.h> /* PATH_MAX = 4096 */
#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    char buf[PATH_MAX];
    char *res = realpath(".", buf);
    if (res)
    {
        printf("%s\n", buf);
    } else
    {
        perror("realpath");
        exit(1);
    }

    return 0;
}

#include <iostream>
#include <Windows.h>
#include <atlconv.h>


int main()
{
wchar_t path[MAX_PATH] = { 0 };
GetModuleFileName(NULL, path, MAX_PATH);

USES_CONVERSION;
std::string str = W2A(path);
str = str.substr(0, str.find_last_of("\\/"));

printf("%s\n", str.c_str());
}