Output of the file should be: Hello Hello there Length = 11 Hello Hello again Le
ID: 3804829 • Letter: O
Question
Output of the file should be:
Hello
Hello there
Length = 11
Hello
Hello again
Length = 11
0
1
Using the starter source file below and implement the functions where the descriptive comments are found. The class contains a pointer that the classes constructor will initialize by dynamically allocating 101 characters using the new keyword. A destructor will be responsible for deallocating the memory using the delete[] keyword. You're not allowed to use the c-string library functions like strlen, strcpy, etc . . .. Use the arrays and pointers.
/////////Contents of starter file below:
#define _CRT_SECURE_NO_WARNINGS
#include
using namespace std;
class String
{
private:
char* pstr;
public:
String()
{
// allocate 101 characters and initialize pstr
// Set the first character in the array to the null terminating character
}
String(const char* s)
{
// allocate 101 characters and initialize pstr
// copy the characters from s into pstr
}
~String()
{
// deallocate the memory for the character array
}
int length() const
{
// loop through array and keep count
}
bool operator == (const String& s)
{
// loop and compare characters in each array by passing a String as the arg
}
bool operator == (const char* ps)
{
// loop and compare characters in each array by passing a char* as the arg
}
void operator += (const char* ps) // concatenate
{
// add the characters to the end of the existing characters by passing a char* as the arg
}
void operator += (const String& s) // concatenate
{
// add the characters to the end of the existing characters by passing a String as the arg
}
operator char* () // conversion operator
{
// return a pointer to the characters
}
};
int main()
{
String s1;
s1 += "Hello";
cout << s1 << endl;
s1 += " there";
cout << s1 << endl;
cout << "Length = " << s1.length() << endl;
cout << endl;
String s2 = "Hello";
cout << s2 << endl;
s2 += String(" again");
cout << s2 << endl;
cout << "Length = " << s2.length() << endl;
cout << (s1 == s2) << endl;
cout << (s1 == "Hello there") << endl;
system("pause");
return 0;
}
Explanation / Answer
#define _CRT_SECURE_NO_WARNINGS
#include
using namespace std;
class String
{
private:
char* pstr;
public:
String()
{
// allocate 101 characters and initialize pstr
// Set the first character in the array to the null terminating character
}
String(const char* s)
{
// allocate 101 characters and initialize pstr
// copy the characters from s into pstr
}
~String()
{
// deallocate the memory for the character array
}
int length() const
{
// loop through array and keep count
}
bool operator == (const String& s)
{
// loop and compare characters in each array by passing a String as the arg
}
bool operator == (const char* ps)
{
// loop and compare characters in each array by passing a char* as the arg
}
void operator += (const char* ps) // concatenate
{
// add the characters to the end of the existing characters by passing a char* as the arg
}
void operator += (const String& s) // concatenate
{
// add the characters to the end of the existing characters by passing a String as the arg
}
operator char* () // conversion operator
{
// return a pointer to the characters
}
};
int main()
{
String s1;
s1 += "Hello";
cout << s1 << endl;
s1 += " there";
cout << s1 << endl;
cout << "Length = " << s1.length() << endl;
cout << endl;
String s2 = "Hello";
cout << s2 << endl;
s2 += String(" again");
cout << s2 << endl;
cout << "Length = " << s2.length() << endl;
cout << (s1 == s2) << endl;
cout << (s1 == "Hello there") << endl;
system("pause");
return 0;
}
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