Binary to Decimal Conversion

#include <stdio.h>
#include <math.h>
int convert(long int n)
{
    static int decimal;
    static int j;
    if(n==0)
        return decimal;
    if(n%2)
        decimal += pow(2,j++);
    else
        j++;
    convert(n/10);
}
int main()
{
    long int binary;
    printf("Enter the Binary number: ");
    scanf("%ld",&binary);
    printf("The decimal form is %d",convert(binary));
    fflush(stdin);
    getchar();
    return 0;
}