自校验

#include <iostream>
#include <stdio.h>
extern long FileSizeof(char *);
int main()
{
if(FileSizeof("\\a.exe")==229409)
{
std::cout<<"软件没有被破解"<<std::endl;
getchar();
}else
{
std::cout<<"软件已经被破解"<<std::endl;
getchar();
}
return 0;
}

extern long FileSizeof(char *FileName)
{
FILE *fop;
long temp;
fop=fopen(FileName,"r");
fseek(fop,0,SEEK_END);
temp=ftell(fop);
fclose(fop);
return temp;
}