C + + Problem-20140924

From http://zhedahht.blog.163.com/blog/static/25411174201171214133316/

Problem ( ) : What is the printed result of C + + code in operation ?

BOOL Fun1 (char* str)

{

printf ("%s\n", str);

return false;

}

BOOL Fun2 (char* str)

{

printf ("%s\n", str);

return true;

}

int _tmain (int argc, _tchar* argv[])

{

bool res1, res2;

res1 = (Fun1 ("a") && Fun2 ("B")) | | (Fun1 ("C") | | Fun2 ("D"));

Res2 = (Fun1 ("a") && Fun2 ("B")) && (Fun1 ("C") | | Fun2 ("D"));

return res1 | | res2;

}

Answer : Print out 4 lines, respectively a, C, D, a.

return is False,  no matter Func2 (" B ") ,fun1 (" a ") && Func2 (" B ") The result of span lang= "ZH-CN" is False

when calculating Rest2 , first Func1 ("a") prints a line of content. Because Func1 ("a") returns false, as before, Func2 ("B") omits the calculation. Because the result of FUN1 ("a") && Func2 ("B") is false, regardless of the result of FUN1 ("C") && Func2 ("D"), the result of the entire expression is false , so Fun1 ("C") && Func2 ("D") are ignored.

C + + Problem-20140924