Program in C++ to Convert Binary to Decimal number Using Function

Program in C++ to Convert Binary to Decimal number Using Function

First Method 

//https://clanguage0.blogspot.com
#include<iostream>
#include<conio.h>
#include<string.h>
 using namespace std;
  int BinToDec(char bin[])
    {
     int dec=0,base=1,temp,len,i=0;
      for(i=strlen(bin)-1;i>=0;i--)
       {
        temp=int(bin[i])-48;
         dec=temp*base+dec;
        base*=2; 
    }
     return dec;
 }
   int main()
    {
     char bin[7];
     cout<<"Ener a binary No.:-";
     cin>>bin;
     int bn=BinToDec(bin);
     cout<<"Decimal No.="<<bn;
     getch();
    }

Output:-

Second Method 

#include<iostream>
#include<conio.h>
#include<string.h>
 using namespace std;
  int BinToDec(int bin)
    {
     int dec,base=1;
      for(dec=0;bin!=0;bin/=10)
       {
        dec=(bin%10)*base+dec;
        base*=2; 
    }
     return dec;
 }
   int main()
    {
     int bin;
     cout<<"Enter a binary No.:-";
     cin>>bin;
     int bn=BinToDec(bin);
     cout<<"Decimal No.="<<bn;
     getch();
    }

Output:-