Binary to Hexadecimal Conversion in C

January 03, 2026

C Program to Check Prime Number Using Efficient Logic

Introduction A prime number is a number that has exactly two distinct positive divisors: 1 and itself. In this program, we check whether a given number is prime or not using a simple and efficient logic. This type of program is commonly used in mathematics, competitive programming, and basic algorithm learning for beginners in C programming. Problem Statement The task is to write a C program that determines whether a given integer is a prime number or not. The program takes a single integer input from the user and analyzes its divisibility. If the number has no divisors other than 1 and itself, it should be identified as a prime number; otherwise, it is not prime. This problem is important in number theory and has practical relevance in areas such as cryptography, data validation, and algorithm design. Algorithm / Logic Explanation To check whether a number is prime, we need to verify that it is not divisible by any number other than 1 and itself. The algorithm follows a si...

✅ Binary to Hexadecimal Conversion in C

#include<stdio.h>
int main( )
{
    int num, hexa = 0, remainder, j = 1;
    printf("Enter the binary number:\n");
    scanf("%d", &num);
    while(num != 0)
    {
        remainder = num % 10;
        hexa = hexa + remainder * j;
        j = j * 2;
        num = num / 10;
    }
    printf("The hexadecimal value is %X\n", hexa);
}

📘 Explanation:

This C program converts a binary number (input as an integer) to its hexadecimal equivalent. The binary number is first converted to its decimal form manually using bit-weight multiplication (base 2 logic). The resulting decimal is then printed in hexadecimal using the format specifier %X.

🧾 Sample Output:

Enter the binary number:
1010
The hexadecimal value is A

🔑 Keywords:

Binary to Hexadecimal, C Program for Hex Conversion, base conversion in C, Hexadecimal output, %X format specifier, scanf printf in C

📌 Hashtags:

#CProgramming #BinaryToHex #HexadecimalConversion #BaseConversion #PrintfFormat #BeginnerCCode #BitwiseLogic

Search This Blog

1PRINTF

Featured

C Program to Check Prime Number Using Efficient Logic