The code must be c++ The code given below does not compile due to const issues.
ID: 650568 • Letter: T
Question
The code must be c++
The code given below does not compile due to const issues. Modify the existing class code and add const in the appropriate locations to make it compile with the existing main and printNumber.
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#include <iostream>
using namespace std;
//Do not modify anything on or above the line below this
//START_PROVIDED
class EvenNumber {
private:
int value;
public:
EvenNumber(int startValue) {
//use our function to do the work...
setValue(startValue);
}
int getValue() {
return value;
}
void setValue(int newValue) {
//if given odd number, increase by 1
if(value % 2 == 0)
value = newValue;
else
value = newValue + 1;
}
void increment() { value += 2; }
void decrement() { value -= 2; }
};
//END_PROVIDED
//Do not modify anything on or below the line above this
void printNumber(const EvenNumber& n) {
cout << n.getValue() << endl;
}
int main()
{
EvenNumber e1(4);
e1.increment();
printNumber(e1);
return 0;
}
Explanation / Answer
#include <iostream>
using namespace std;
class EvenNumber
{
private:
int value;
public:
EvenNumber(int startValue)
{
setValue(startValue);
}
int getValue()
{
return value;
}
void setValue(int newValue)
{
if(value % 2 == 0)
value = newValue;
else
value = newValue + 1;
}
void increment() { value += 2; }
void decrement() { value -= 2; }
}
void printNumber(const EvenNumber , &n)
{
cout<<n.getValue()<< endl;
}
int main()
{
EvenNumber.e1(4);
e1.increment();
printNumber(e1);
return 0;
}
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