Check Even or Odd using Bitwise AND in C

February 24, 2026

C Program to Solve Two Sum Using Brute Force (With Algorithm & Output)

Introduction The Two Sum problem is a popular coding interview question where we must find two indices of an array whose values add up to a given target. This program demonstrates a simple brute-force solution in C using nested loops and dynamic memory allocation. Problem Statement Given an integer array and a target value, return the indices of the two numbers such that they add up to the target. Each input has exactly one solution, and the same element cannot be used twice. The result should return the indices, not the values. If no solution exists, return NULL. Algorithm / Logic Explanation Start the program. Traverse the array using a loop from index 0 to numsSize - 1 . Inside this loop, use another loop starting from i + 1 to numsSize - 1 . For every pair (i, j) , check if nums[i] + nums[j] == target . If condition becomes true: Allocate memory for 2 integers using malloc() . Store indices i and j . Set returnSize = 2 . Return the result poi...

✅ Check Even or Odd Using Bitwise AND in C

#include <stdio.h>

int main() {
    int num;
    printf("Enter a number:\n");
    scanf("%d", &num);

    // Using bitwise AND operator
    if (num & 1)
        printf("%d is Odd\n", num);
    else
        printf("%d is Even\n", num);

    return 0;
}

📘 Explanation:

This C program determines whether a number is even or odd using the bitwise AND operator:

In binary, even numbers end with 0 and odd numbers end with 1.
num & 1 isolates the last bit of the number.
If the result is 1, the number is odd. If it's 0, it's even.

This method is efficient and used in low-level systems and embedded code for performance.

🧾 Sample Output:

Enter a number:
11
11 is Odd

Enter a number:
24
24 is Even

🔑 Keywords:

Bitwise AND, Even or Odd using bitwise, C program for parity check, binary logic, bitwise operators, embedded C tricks

📌 Hashtags:

#CProgramming #BitwiseOperations #EvenOddCheck #BinaryLogic #BeginnerC #EmbeddedC #CodingTricks

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C Program to Solve Two Sum Using Brute Force (With Algorithm & Output)