I have a C++ midterm due tomorrow that I can't figure out. Here is the assignment:

Code:// Use the program BtoDsol.cpp located at: BtoDSol.cpp // which converts any byte to decimal // enhance the driver program to test an additional function DtoB with a prototype of: // string DtoB (int Decimal); // DtoB will convert any decimal number <= 255 to binary // Here is a possible partial code: string DtoB (int Decimal) { string Bin ="00000000"; // declare a model binary number // you will need to develop the rest of the code here // return Bin; }

Now, the .cpp referred to, BtoDSol.cpp:

Code:// This program will test the function BtoD // int BtoD (string Binary); is the prototype // will convert any byte (8bits) from binary to decimal #include <iostream> #include <string> using namespace std; void BaseGen(int Base[], int Size) { Base[0]=1; // the first element is always 1 int Index=1; // start with the second value while(Index<Size) // must load all Base elements { Base[Index]=Base[Index-1]*2; // left = right *2 Index=Index+1; // Bump the Index } return ; } int BtoD(string Binary) { unsigned int Index=1; //loop control variable Index=0; // Initialize to zero int Dv=0; //Dv is the decimal value for the binary number in Binary int Base[8]; // Base array to store binary base values BaseGen(Base,8); // Load Base while(Index<Binary.size()) // loop to check all bits { if (Binary[Index]=='1') // if the value is 1 Dv=Dv+Base[Binary.size()-1-Index]; // add the corresponding base value to Dv Index=Index+1; // Bump the loop control variable } return Dv; // Return the decimal value } // The driver program follows int main() { string Bin,Anychar; int Decimal; // Get the binary number cout << " Please type any valid Binary Number of eight or less bits"<< endl; cin>> Bin; // Convert A to decimal Decimal=BtoD( Bin); cout <<" The decimal value of "<< Bin << " is = "<<Decimal<<endl; cin >> Anychar; return 0; }

I have no idea what to do on this one. Any help greatly appreciated, being how my grade depends on it and all.