C Programming - Bitwise Operators - Discussion

Discussion Forum : Bitwise Operators - Find Output of Program (Q.No. 12)
12.
What will be the output of the program ?
#include<stdio.h>

int main()
{
    int i=4, j=8;
    printf("%d, %d, %d\n", i|j&j|i, i|j&&j|i, i^j);
    return 0;
}
4, 8, 0
1, 2, 1
12, 1, 12
0, 0, 0
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
25 comments Page 1 of 3.

VISHAL VANAKI said:   5 years ago
4 = 0100
8 = 1000

Let taken 1=true and 0=false.

| means "or" operator i.e. only false to false condition become false but in other cases become a true condition.
& means "and" operator i.e. only true and true condition become true but in other cases it becomes false.

^ means "double implication" i.e. true, false condition and false, true conditions become true but in other cases it shows false.

Then,
i|j = 0100 | 1000 = 1100 = 12
j|i = 1000 | 0100 = 1100 = 12
and then i|j&j|i = 1100 & 1100 = 1100 = 12
So first condition prints 12
And third condition also prints 12.

In the second condition following '&&' is operator shows true prints 1 or false prints 0 for the following condition. So 12&12 = 12 so it is true so it prints 1.
That's it.
(1)

Yasaswini said:   6 years ago
@Sana.

X and y values are defined as constant.
So values don't change.
The answer is 50 60 110.
If it is wrong pls tell me how it comes?

Hayyan said:   6 years ago
| what is this symbol means?

Anish Kumar said:   7 years ago
An unary operator has higher precedence than arithmetic operator so why pre-increment and pre-decrement will happen first ++x + --y i.e. 51 + 59 = 110.

x=50 ++x=51;.

Lokesh said:   8 years ago
For i|j&&j|i or operator has high precedence so j|i=12 and i|j=12.

Result of i|j && result of j|i is true because in && operator it checks both operands are non zero.

So it produces 1 as its output.

Tarun Ghosh said:   8 years ago
^ this is binary XOR operator. Perform Bit-wise XOR operation Means odd no. of 1 is 1 otherwise 0. Then you will get your answer.

Aalapini said:   8 years ago
Can some one explain i^j part? The function of ^ operator specifically.

Sana said:   9 years ago
Can any one please tell me if i=4 and j=8 then how i&&j and i||j done?

Sana said:   9 years ago
51 59 110 is correct.

Sudha said:   9 years ago
@Neetu.

The output is:

51 59 110

The correct or not.

Please anyone tell me.


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