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.
int n = 5; for(int i = 0;i!=n;i++)//condition != { //executing 5times } int n = 5; for(int i = 0;i<n;i++)//condition < { //executing 5times } Which one is preferred?
This was example from ‘Accelerated C++ : practical programming by example / Andrew Koenig, Barbara E. Moo.’ Just wanted to know why the Author prefers the first one
The second. For two reasons
The less than (or sometimes <=) is the usual way that most coder write these, and it’s better to stick to convention if possible – the != will probably make most coders look twice to check if there’s something odd in the loop whereas the < will be instantly understood.
The != depends on an exact condition. If the interior of the loop is modified during maintenance and i accidentally incremented inside the loop then you would end up with an infinite loop. Generally it’s always better to make your termination condition as wide as possible – it’s simply more robust.
2 is of course the reason why 1.