Decimal to Binary Conversion using String

#include <stdio.h>

int main()
{
    int decimal;
    char binary[100];

    printf("Enter a decimal number: ");
    scanf("%d", &decimal);

    int n = 1;

    while(pow(2, n) <= decimal)
    {
        n++;
    }

    int i;

    for(i = n-1; i >= 0; i--)
    {
        binary[i] = (decimal % 2) + '0';

        decimal = decimal/2;
    }

    binary[n] = '\0';

    printf("%s\n", binary);

    return 0;
}