Boolean operation and pre-increment in c

Question

Can anyone explain why c is still 15 after doing

int main(void)
{
    int t,a=5,b=10,c=15;
        t= ++a||++c;
        printf("%d  %d  %d",t,a,c);
}

+3

yassin Jul 14 15 at 19:14

1 answer

dbush · Answer 1 · 2015-07-14T19:17:55+0000

Boolean or operator ||

is a short-circuit operator. If the left side evaluates to a true boolean (i.e., not 0), then the right side fails.

Likewise for boolean and operator &&

, if the left side is false (i.e. 0), the right side is not executed.