Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I have a quick question about the following expression:
int a_variable = 0;
if(0!=a_variable)
a_variable=1;
what is the difference between “(0 != a_variable)” and “(a_variable != 0)” ?
I dont have any errors for now but is this a wrong way to use it??
if you forget the
!, the first will give an error(0 = a_variable)and the second will wreak havoc(a_variable = 0).Also, with user-defined operators the second form can be implemented with a member function while the first can only be a non-member (possibly friend) function. And it’s possible, although a REALLY bad idea, to define the two forms in different ways. Of course since
a_variableis anintthen there are no user-defined operators in effect in this example.