convert decimal to binary in c.

 #include <stdio.h>

long int decimal_to_binary(int n)

{

long int binary = 0;

int remainder, i, flag = 1;

for(i = 1; n != 0; i = i * 10)

{

remainder = n % 2;

n /= 2;

binary += remainder * i;

}

return binary;

}

int main()

{

int n;

printf("Enter a decimal number: ");

scanf("%d", &n);

printf("Equivalent binary number: %d\n", decimal_to_binary(n));

return 0;

}