Using - C
  
 Source Code
  

    
#include<stdio.h>

void convertToBinary(int num);

void main() {
	int num;
	printf("Enter a number:  ");
	scanf("%d",&num);
	printf("DECIMAL:  %d",num);
	convertToBinary(num);
}

void convertToBinary(int num) {
	int binaryArray[1024], remainder, i=0, j;
	
	while(num != 0) {
		remainder = num % 2;
		binaryArray[i++] = remainder;
		num /= 2;
	}
	printf("\nBINARY :  ");
	for(j=i-1; j >= 0; j--) {
		printf("%d", binaryArray[j]);
	}
}
    

Enter a number:  46
DECIMAL:  46
BINARY   :  101110

        
Using - C++
        
 Source Code
        

        
#include<iostream>
using namespace std;

void convertToBinary(int num);

int main() {
   int num;
   cout<< "Enter a number:  ";
   cin>> num;
   cout<< "DECIMAL:  "<< num;
   convertToBinary(num);
		
	return 0;
}

void convertToBinary(int num) {
	int binaryArray[1024], remainder, i=0;
	
	while(num != 0) {
		remainder = num % 2;
		binaryArray[i++] = remainder;
		num /= 2;
	}
	cout<< "\nBINARY :  ";
	for(int j=i-1; j >= 0; j--) {
		cout<< binaryArray[j];
	}
}
      

Enter a number:  8
DECIMAL:  8
BINARY   :  1000