conditions with variable or function

[tulip reef]

I know that if I have a function call as a condition it will run the function everytime the condition is checked but what if I had a variable with a function assigned to it and I put the variable in the condition, would it execute the function everytime the condition is checked? Or does it just execute once and keep the return value of the function

[tall spindle]

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[spare sky]

it will run the function everytime the condition is checked
not necessarily. it depends on said condition. short circuit may be kicking in (again, depends on said condition)

had a variable with a function assigned to it and I put the variable in the condition, would it execute the function everytime the condition is checked?
can you provide an example?

as a side note - do note that if said function can be evaluated at compile time, depends on your compiler optimization settings - the functions may not be called at all

[smoky sable]

he means that for example

int a = foo();
for(size_t i = 0; i < 10; i++){
  if(a>10){
    printf("foo");
  }
}

would call foo() 10 times or not

and it wont

@tulip reef i guess that is what you asked?

idk what else could the question be directed at

you are copying the return value of the function into a variable

not aliasing the function

[spare sky]

🤷‍♂️
It would be beat to let them answer instead of guessing

[mystic vault]

There are two ways for functions to interact with variables. You can either store the return value
int value = getValue();
or you can store a pointer to the function, in order to run it later.
int(*function)() = &getValue;
int value = function();