ChangeDirectory.c

#include <windows.h>
#include <stdio.h>

#if define UNICODE
	#define SetCurrentDirectory SetCurrentDirectoryW
	#define GetCurrentDirectory GetCurrentDirectoryW
#else
	#define SetCurrentDirectory SetCurrentDirectoryA
	#define GetCurrentDirectory GetCurrentDirectoryA
#endif



int main(int argc, LPTSTR argv[])
{
	if (argc != 2) {
		fprintf(stderr, "Usage: mycd dirName\n");
		return 1;
	}
	SetCurrentDirectory(argv[1]);
	CHAR pwdBuffer[MAX_PATH];
	DWORD x = GetCurrentDirectory(MAX_PATH, pwdBuffer);
	printf(pwdBuffer);
}