Logical Operator Example

main()

{

    int i=-1,j=-1,k=0,n=2,m;

    m=i++&&j++&&k++||n++;

    printf("%d %d %d %d %d",i,j,k,n,m);

}

Answer:

            0 0 1 3 1

Explanation :

Logical operations always give a result of 1 or 0 . And also the logical AND (&&) operator has higher priority over the logical OR (||) operator. So the expression  ‘i++ && j++ && k++’ is executed first. The result of this expression is 0    (-1 && -1 && 0 = 0). Now the expression is 0 || 2 which evaluates to 1 (because OR operator always gives 1 except for ‘0 || 0’ combination- for which it gives 0). So the value of m is 1. The values of other variables are also incremented by 1.

Blog Author: Vijay Kumar

Go to: Java Aptitude