C++ please check if it’s correct or not

Question

The assignment is:

Write a tiny library and submit it in files AboutDog.h and AboutDog.cpp.

This library has the only function: 

void AboutDog(const std::string & dogName, unsigned int description)

The function AboutDog outputs on the screen the following text:

This dog is called *dogName*. It is *list of dog features from description*.

description encodes the dogs properties the following way:

1.  set bit 0 means the dog is big
2.  set bit 1 means the dog is hairy
3.  set bit 2 means the dog is brown
4.  set bit 3 means the dog is smart

In the header file, define macros DOG_BIG, DOG_HAIRY, DOG_BROWN, DOG_SMART. I should be able to call the function like this:

AboutDog( "Spike", DOG_BROWN | DOG_SMART | DOG_HAIRY );

The above call should produce the output like this:

This dog is called Spike. It is hairy brown smart.

The order of features doesn't matter. Punctuation doesn't matter too. If description==0 skip the second sentence.

answer:

AboutDog.h:

#include <iostream>

#define DOG_BIG 0

#define DOG_HAIRY 1

#define DOG_BROWN 2

#define DOG_SMART 3

AboutDog.cpp:

#include "AboutDog.h"

using namespace std;

void AboutDog(const std::string & dogName, unsigned int description) {

cout<<"This dog is called "<<dogName<<". ";

if(description != 0) {

cout<<"It is";

if(description & DOG_BIG) {

cout<<" big";

}

if(description & DOG_HAIRY) {

cout<<" hairy";

}

if(description & DOG_BROWN) {

cout<<" brown";

}

if(description & DOG_SMART) {

cout<<" smart";

}

cout<<"."<<endl;

}

}

Answer 1

You are very close.

#include <iostream>

#include <math.h>

#define DOG_BIG 1 //bit zero ---> 2^0=1

#define DOG_HAIRY 2 //bit one ---> 2^1 = 2

#define DOG_BROWN 4 //bit two ---> 2^2=4

#define DOG_SMART 8 // bit three --> 2^3=8

//#include "AboutDog.h"

using namespace std;

void AboutDog(const std::string & dogName, unsigned int description)

{

cout<<"This dog is called "<<dogName<<". ";

if (description != 0)

{

cout<<"It is";

if(description & DOG_BIG)

{

cout<<" big ";

}

if(description & DOG_HAIRY)

{

cout<<" hairy ";

}

if(description & DOG_BROWN)

{

cout<<" brown ";

}

if(description & DOG_SMART)

{

cout<<" smart ";

}

cout<<"."<<endl;

}

}

main()

{

AboutDog("Shotzy",DOG_BIG|DOG_SMART);

}