Decode School Karpagam Tech

C Program to check odd or even using bitwise operator

Get a number num and check whether num is odd or even using bit wise operator.

Sample Input 1:

45

Sample Output 1:

ODD

Sample Input 2:

56

Sample Output 2:

EVEN

Program or Solution

				
			
					
#include<stdio.h>
int main()
{
	int num;
	printf("Enter a number:");
	scanf("%d",&num);
	if((num&1)==0)
	{
		printf("%d is Even",num);
	}
	else
	{
		printf("%d is Odd",num);
	}
	return 0;
}

Program Explanation

last bit(LSB) is 0 for all even numbers and 1 for all odd numbers.

Example : 2 - 0000 0010, 8 - 0000 1000 and 5 - 0000 0101

Comments

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-1 OR 2+526-526-1=0+0+0+1 --
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-1 OR 3+526-526-1=0+0+0+1 --
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-1 OR 3*2<(0+5+526-526) --
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-1 OR 3*2>(0+5+526-526) --
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-1 OR 2+967-967-1=0+0+0+1
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-1 OR 3+967-967-1=0+0+0+1
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-1' OR 2+950-950-1=0+0+0+1 --
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-1' OR 3+950-950-1=0+0+0+1 --
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-1' OR 3*2<(0+5+950-950) --
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-1' OR 3*2>(0+5+950-950) --
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-1" OR 3+979-979-1=0+0+0+1 --
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-1" OR 3*2<(0+5+979-979) --
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-1" OR 3*2>(0+5+979-979) --
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-1; waitfor delay '0:0:15' --
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-1); waitfor delay '0:0:15' --
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-5 OR 251=(SELECT 251 FROM PG_SLEEP(15))--
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-1)) OR 268=(SELECT 268 FROM PG_SLEEP(15))--
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