Как такового оператора else if нет, это лишь использование ещё одного if в ветке else другого if. Но разница между ними есть. В первом случае второе условие отработает, если не …

Nov 23, 2014 · Semântica As linguagens de programação costumam ter construções diferentes para dar efeitos semânticos diferentes. Raramente você precisa de uma construção diferente se não quer …

Nov 14, 2018 · That statement seems irrelevant. Generate assembly code with and without that statement and you will see what is going under the hood.

Dec 19, 2012 · In plain old C there is not boolean data type but there is boolean logic. Numeric values all evaluate to true except for 0 which evaluates to false. The consequence of this is the fact that if you …

Apr 13, 2017 · I am trying to discern the difference between: if else and else if How do you use these? And when do you use them and when not?

I have a condition for an if statement. It should evaluate to True if the user inputs either "Good!" or "Great!". The code is as follows: weather = input ("How's the weather? &

Every command that runs has an exit status. That check is looking at the exit status of the command that finished most recently before that line runs. If you want your script to exit when that test returns …

Apr 18, 2012 · There are two switches for the if condition which check for a file: -e and -f. What is the difference between those two?

Jul 24, 2009 · No, it is not. As I'm using EXISTS, I was just following what I thought was standard practice in sub-queries using EXISTS.

The zmbq solution is good, but cannot be used in all situations, such as inside a block of code like a FOR DO (...) loop. An alternative is to use an indicator variable. Initialize it to be undefined, and then …