=============================
int main(int argc,  char * const argv[]) {
	if(argv[0] == string("sumcheater.exe"))
		cout << "I am nice." << endl;
	else 
		cout << "I am evil." << endl;
	return 0;
}
==============================

D:\Programowanie\sumcheater>copy sumcheater.exe evilsumcheater.exe
        1 file(s) copied.

D:\Programowanie\sumcheater>fciv -md5 -sha1 sumcheater.exe
//
// File Checksum Integrity Verifier version 2.05.
//
                MD5                             SHA-1
-------------------------------------------------------------------------
810f8d6566fd1cd38e33048c2c5c0f0f 22cde2152b1ee4a90a1177b8ae253b30f0e90993 sumcheater.exe

D:\Programowanie\sumcheater>fciv -md5 -sha1 evilsumcheater.exe
//
// File Checksum Integrity Verifier version 2.05.
//
                MD5                             SHA-1
-------------------------------------------------------------------------
810f8d6566fd1cd38e33048c2c5c0f0f 22cde2152b1ee4a90a1177b8ae253b30f0e90993 evilsumcheater.exe

D:\Programowanie\sumcheater>sumcheater.exe
I am nice.

D:\Programowanie\sumcheater>evilsumcheater.exe
I am evil.

D:\Programowanie\sumcheater>