下面这两段代码有区别吗？为啥执行结果不一样呢？

Question

if( ( save_file = fopen("/home/han/save.txt","w") ) == NULL);
{
fprintf(stderr,"%s\n","filed to open file");
exit(1);
}
/*
save_file = fopen("/home/han/save.txt","w");

if(save_file == NULL)
{
    fprintf(stderr,"%s\n","filed to open file");
    exit(1);
}
*/

    注释部分代码和前面的代码有区别吗？为什么上面的代码总是输出filed to open file而注释部分的代码是正常的啊！！！？？？

Answer 1

if( ( save_file = fopen("/home/han/save.txt","w") ) == NULL); 多了分号