If 1 == true, can you flip it?

Question

So in c++, 1 is equalavent to true

int test = 1;
if(test) {// returns true; enter if loop
    passgo();
    collect200dollars();
}

Does the flip operator (sorry for lack of better name) work on this?

int test = 1;
if(!test) {// returns false; do not enter if loop
...
}else{
    goToJail();
}

Answer 1

Not only one but also all non zero values are equivalent to true. When you are writing

if(test) 

it means, compiler checks if the value of test is equivalent to 0 or not. If value of test is equivalent to 0, then the if expression returns false, otherwise returns true.

Answer 2

Yes, you can check it also for false... It will negate test which is true because it is not a zero. In conversion of int to bool, If the value is not a zero then it will consider it as true otherwise it is false. In your case you assigned test = 1 that means true, and you are negating true value means if condition will directly go to execute else code..

Answer 3

Any fundamental numerical type ( int , double , float etc) different from zero will be converted to a bool equal to true in a condition. So the ! operator will negate a bool which is true , and the latter will become false .

See related https://stackoverflow.com/a/8591324/3093378