Answer 1

M .Queen
https://www.sololearn.com/learn/CPlusPlus/1635/

Answer 2

Thats how it should be after using namespace std; line.
void binary_to_decimal()
{
long bool1;
int decimal=0,i=0;
cout<<"inter any binary decimal"<<endl;
cin>>bool1;
while (bool1 != 0 )
{
decimal=decimal + ((bool1 %10)*pow(2,i));
i++;
bool1=bool1/10;
}
cout<<"the decimal equivelent is "<<decimal<<endl;
}

int main()
{
binary_to_decimal ();
}