I've stumbled upon a piece of code that look as follows:
void check()
{
int integer = 7;
//integer2 is not declared anywhere
int check = integer, integer2;
//after running
//check = 7
//integer = 7
//integer2 = 0
}
what's the purpose of the comma here?
Comma on variable declarations simply allows you to declare a second variable of the same type. It is equivalent to:
int check = integer;
int integer2;
As for:
//integer2 is not declared anywhere
Yes it is; right here! This is the declaration of integer2
.
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