C Program: Print Binary Representation of a Number

April 04, 2026

C Pattern Programs: Square Number and Alphabet Patterns Explained

🔷 Square Star Pattern 📋 Copy Code #include <stdio.h> int main() { int num; printf("Enter the number:\n"); scanf("%d", &num); for(int i = 1; i <= num; i++) { for(int j = 1; j <= num; j++) { printf("* ");//keep"* " } printf("\n"); } return 0; } 🔷 Reverse Square Alphabet Pattern (Column-wise) 📋 Copy Code #include <stdio.h> int main() { int num; printf("Enter the number:\n"); scanf("%d", &num); for(int i = num; i >= 1; i--) { for(int j = num; j >= 1; j--) { printf("%c ", j + 64);//%c for Character and 64 will be ASIIC VALUE } printf("\n"); } return 0; } 🔷 Reverse Square Alphabet Pattern (Row-wise) 📋 Copy Code #include <stdio.h> int main() { int num; ...

✅ 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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C Pattern Programs: Square Number and Alphabet Patterns Explained