Question

Write a C/C++ program that simulate a menu based binary number calculator. This calculate shall have the following three functionalities:

1. Covert a binary string to corresponding positive integers

2. Convert a positive integer to its binary representation

3. Add two binary numbers, both numbers are represented as a string of 0s and 1s

To reduce student work load, a start file CSCIProjOneHandout.cpp is given. In this file, the structure of the program has been established. The students only need to implement the following three functions:

1. int binary_to_decimal(string b);

// precondition: b is a string that consists of only 0s and 1s

// postcondition: the positive decimal integer that is represented by b

2. string decimal_to_binary(int n);

// precondition: n is a positive integer

// postcondition: n’s binary representation is returned as a string of 0s and 1s

3. string add_binaries(string b1, string b2);

// precondition: b1 and b2 are strings that consists of 0s and 1s, i.e. b1 and b2 are binary

//                          representations of two positive integers

// postcondition: the sum of b1 and b2 is returned. For instance, if b1 = “11”, b2 = “01”, //                           then the return value is “100”

Answer 1

#include

#include

#include

using namespace std;

int binary_to_decimal(string b);

string decimal_to_binary(int n);

string add_binaries(string b1, string b2);

int binary_to_decimal(string b) {

               

                int decimal_number=0;

                int significant_digit = b.length()-1;

                for(int index=0;index

                                if(b.at(index)=='1'){

                                                decimal_number+=pow(2,significant_digit-index);

                                }

                }

                return decimal_number;

}

string decimal_to_binary(int n){

               

                string binary_string="";

                while(n!=0){

                                if(n%2==0){

                                                binary_string="0"+binary_string;

                                }else{

                                                binary_string="1"+binary_string;

                                }

                                n/=2;

                }

                return binary_string;

}

string add_binaries(string b1, string b2){

               

                int b1_int = binary_to_decimal(b1);

                int b2_int = binary_to_decimal(b2);

               

                return decimal_to_binary(b1_int+b2_int);

}

int main(){

               

                string b1="100";

                string b2="100";

                cout<

               

}

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