Example

getcmd.c

/* clang getcmd.c -o getcmd.exe -Os */

#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define WIN32_LEAN_AND_MEAN
#include <windows.h>

int main() {
  const wchar_t* wcmd = (wchar_t*) GetCommandLineW();
  printf("%ls\n", wcmd);
  return 0;
}