C Program: Print Binary Representation of a Number

May 31, 2026

Mastering Hollow Square Patterns in C: Stars, Numbers, Alphabets & Binary

🔢 C Program to Print Hollow Continuous Number Square 📄 Source Code: #include <stdio.h> int main() { int num, k = 0; printf("Enter the number:\n"); scanf("%d", &num); for(int i = 1; i <= num; i++) { for(int j = 1; j <= num; j++) { if(i == 1 || i == num || j == 1 || j == num) { // k increments sequentially only along the borders printf("%d ", k++); } else { printf(" "); } } printf("\n"); } return 0; } 📋 Copy Code 💻 Expected Output (Input: 5): Enter the number: 5 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 🔢 C Program to Print Standard Hollow Binary Row Square 📄 Source Code (Fixed Specifier): #include <stdio.h> int main() { ...

✅ C Program: Binary Representation of a Number

#include<stdio.h>
int main( )
{
    unsigned int num;
    printf("Enter the number:\n");
    scanf("%u", &num);

    for(int i = 31; i >= 0; i--)
    {
        if(num & (1 << i))
            printf("1");
        else
            printf("0");
    }
    printf("\n");
}

📘 Explanation:

This program prints the binary representation of an unsigned integer using bitwise operators.

The user inputs a number.
The loop checks all 32 bits (from MSB to LSB).
If the bit is set, it prints 1; otherwise, 0.
This uses the expression (num & (1 << i)) to test each bit.

🧾 Sample Output:

Enter the number:
5
00000000000000000000000000000101

🔖 Keywords:

C Program, Binary in C, Bitwise Operator in C, Binary Print, 32-bit Output, C Interview Questions, Unsigned Integer Handling

📌 Hashtags:

#CProgramming #BitwiseOperators #BinaryOutput #InterviewPreparation #AdSenseReady #CodingBlog

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