Decimal to Binary Converter in C using inbuilt function itoa

/**********************************************************************
Decimal to binary in c
 **********************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>


int main(int argc, char** argv) {
  int number;
  char binary [10];
  printf("Enter a decimal number:");
  scanf("%d",&number);
  printf("\n");
  itoa(number, binary, 2);
  printf("\nBinary conversion of %d : %s", number, binary);
  getch();

  return 0;
}

/*
OUTPUT:
Enter a decimal number:7
Binary conversion of 7 : 111
*/

Decimal to Binary Converter in C

/**********************************************************************
Decimal to binary in c
 **********************************************************************/
#include<stdio.h>


int main(){

  long int decimalNumber, quotient;

  int binaryNumber[100],i=1,j;


  printf("Enter a decimal number: ");

  scanf("%ld",&decimalNumber);


  quotient = decimalNumber;


  while(quotient!=0){

      binaryNumber[i++]= quotient % 2;

      quotient = quotient / 2;

    }


  printf("Binary conversion of %d : ",decimalNumber);

  for(j = i -1 ;j> 0;j--)

    printf("%d",binaryNumber[j]);


  return 0;

}

/*
OUTPUT:
Enter a decimal number:7
Binary conversion of 7 : 111
*/