int bin2dec(const string binarystring); // Declaration of bin2dec prototype with one string parameter
cout << "Enter Q to terminate program.\n";
cout << "Enter a binary number: "; //prompt user to enter binary string
cin >> binary;
if (binary == "Q")
cout << "The decimal equivalent of: " << binary << " is: " << bin2dec(binary) << endl;
// output of the binary string and its decimal equivalent
int bin2dec(const string binarystring) // Function definition with one string parameter
unsignedint result = 0 ; // creating int result to return to main function
for( char c : binarystring ) // for each character in the binary string
result *= 2 ; // shift result left by one binary digit
if( c == '1' ) result += 1 ; // add one if the bit is set
return result ; // Returning result to main function
Right now the code is in the form of a 'const string binarystring' and were supposed to be able to use 'const char binarystring' and for some reason whenever i try to switch it i run into problems when referencing the main function to the int bin2dec(...) function.
I wanted to know if theres a simple way to switch the prototype to an array type of function with  without changing the entire code. Thanks!
Even left JLBorges comments :P
As far as the assignment it seems as if they want you to read in a bunch of strings to an array then pass that to the convert.
Maybe they want something like:
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std::cout << "Please enter the number of binary numbers: ";
std::cin >> binaries;
std::cin.ignore(1024, '\n'); //remove new line buffer
//so that way if the user enters their binaries like:
//it will work
std::string *binaryNumbers = new std::string[binaries];
for(int i = 0; i < binaries; ++i)
std::cout << "Please enter binary number " << i+1 << ": ";
Or maybe they want an array of characters instead of std::string?