Binary to Decimal Conversion using C program

/*C program to convert number from binary to decimal*/

#include <stdio.h>
#include <string.h>
#include <math.h>

int main()
{
    char bin[32] = { 0 };
    int dec, i;
    int cnt; /*for power index*/

    printf("Enter binary value: ");
    gets(bin);

    cnt = 0;
    dec = 0;
    for (i = (strlen(bin) - 1); i >= 0; i--) {
        dec = dec + (bin[i] - 0x30) * pow((double)2, (double)cnt);
        cnt++;
    }

    printf("DECIMAL value is: %d", dec);

    return 0;
}

Output:

    Enter binary value: 1000100001
    DECIMAL value is: 545