Decimal number to binary

dec2bin.c

#include<stdio.h>

void dec2bin(int number) {
  if (number == 0) return;
  dec2bin(number/2);
  printf ("%d", number % 2);
}

void main() {
  int number;
  
  printf("Please enter number: ");
  scanf("%d", &number);
  
  printf("The result is: ");
  dec2bin(number);
  printf("\n");
}

output.txt

$ gcc dec2bin.c -o dec2bin
$ ./dec2bin
Please enter number: 973
The result is: 1111001101