Von newman loves binary

#1

#include>
#include<math.h>
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin>>n;
for(int i=1;i<=n;i++)
{
string s;
cin>>s;int count=0;
for(int j=0;j<s.length();j++)
{
count = count+s[j]*pow(2,(s.length())-(j+1));
}
cout<<count<<endl;
}
}
im trying to do this problem in this way . please tell me why im not getting correct result.

#2

please help me sir in this

#3

in the line where you are incrementing count
you have to do
count = count + ( s[j] - ‘0’ ) *pow(2,(s.length())-(j+1)) ;
this will convert the string/char value to a number that you can apply algebraic operations upon.

Please do the above change in your code. The rest of the logic is perfectly fine.

#4

Hi Isha, since you have not been responding to this thread, I am marking your doubt as Resolved for now. Re-open it if required.