In C++, is there any difference between assigning a bool to true and assigning it to 1(or any non-zero integer)?
I have seen many competitive programmers use 1 instead of true even when the code is written in advance, so I want to know if there is any benefit besides simply being faster to type.
>Solution :
… and assigning it to 1(or any non-zero integer)?
In your simple example, the effect will be the same.
// all true:
bool foo = true;
bool bar = 1;
bool baz = 123;
is there any difference?
The one I come to think about is readability/intent. Assigning 1 to a variable displays that the programmer intends this to be a variable carrying a numeric value. After a closer inspection of the code, I will notice that it’s assigned to a bool (and I will promptly change it to true before continuing to read the code).
In the not so simple cases, you’ll instead get a surprise:
#include <iostream>
void foo(bool) { std::cout << "bool\n"; }
void foo(int) { std::cout << "int\n"; } // oups someone added an overload
int main() {
foo(1); // I use 1 instead of true because it's so much shorter
}