Convert decimal number into binary number

Write a program to convert a decimal number into a binary number.

Example:

Input:  num = 10
Output: Binary number is :1010

Approach

C

#include <stdio.h>
int main()
{
    int num;
    printf("Enter a number: ");
    scanf("%d", &num);
    int binary[100];
    int i = 0;
    while (num > 0)
    {
        int temp = num % 2;
        binary[i] = temp;
        num = num / 2;
        i++;
    }
    printf("Binary number is :");
    for (int j = i - 1; j >= 0; j--)
        printf("%d", binary[j]);
    return 0;
}

Java

import java.util.Scanner;
public class DecimalToBinary {
    public static void main(String[] args) {
        System.out.println("Enter a number");
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int binary[] = new int[100];
        int i = 0;
        while (num > 0) {
            int temp = num % 2;
            binary[i] = temp;
            num = num / 2;
            i++;
        }
        System.out.println("Binary number is :");
        for (int j = i - 1; j >= 0; j--)
            System.out.printf("%d", binary[j]);
        sc.close();
    }
}

Related posts

• Write a program to convert octal to binary

• Write a program to convert Hexadecimal to Binary

• Write a program to convert Decimal to Binary