Error with my assignment [closed] - c++

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I had one assignment from my prof., but after coding, I got over 40 errors but don't know why :(
My assignment:
" Build CHAR and STRING class (STRING is a string of CHAR) with these samples:
class CHAR
{
private:
char content;
/* Insert more codes here */
};
class STRING
{
private:
CHAR * content;
int length;
/* Insert more codes here */
};
and then test with this main function:
int main()
{
CHAR c1, c2('c');
STRING s1, s2("s2"), s3('a'), s4(c1);
s1.expand(c2).expand('a').expand(s2).expand("abc");//s1: "cas2abc"
s1.remove(c2).remove('d');//remove all character c2 in s1 -- s1: "as2ab"
s1.input();//insert new string from keyboard
cout<<s1.getContent();// export content of s1
cout<<c1.getContent();// export content of c1
return 0;
}
My code link here: https://bugs.vn/10670
Thank you.

Answer 1

Check compiler errors!
Your STRING class does not have methods: remove, input, getContent. You can not call methods which you have not defined.
This will compile and run.
// CHAR.h
#include <iostream>
// STRING.h
#include <iostream>
#include <string>
#include <string.h> //sg7
using namespace std;
class CHAR
{
private:
char content;
public:
CHAR();
CHAR(char);
char GetContent();
void SetContent(char);
};
class STRING
{
private:
CHAR * content;
int length;
public:
STRING();
STRING(const char*);
STRING(char);
STRING(const CHAR&);
STRING& expand(const CHAR&);
~STRING();
};
// CHAR.cpp
// #include "CHAR.h"
CHAR::CHAR()
{
this->content = '\0';
}
CHAR::CHAR(char)
{
this->content = 'c';
}
char CHAR::GetContent()
{
return content;
}
void CHAR::SetContent(char C)
{
content = C;
}
// STRING.cpp
//#include "STRING.h"
//#include "CHAR.h"
STRING::STRING()
{
this->content = NULL;
this->length = 0;
}
STRING::STRING(const char *c)
{
this->length = strlen(c);
this->content = new CHAR[this->length];
for (int i = 0; i < this->length; i++)
{
this->content[i] = CHAR(c[i]);
}
}
STRING::STRING(char c)
{
this->length = 1;
this->content = new CHAR[1];
this->content[0] = CHAR(c);
}
STRING::STRING(const CHAR &c)
{
this->length = 1;
this->content = new CHAR[1];
this->content[0] = c; //.SetContent(c.GetContent());
}
STRING& STRING::expand(const CHAR &c)
{
CHAR *new_content = new CHAR[this->length + 1];
for (int i = 0; i < this->length; i++)
{
new_content[i] = this->content[i];
}
new_content[this->length] = c;
if(this->content!=NULL)
{
delete[] this->content;
}
this->content = new_content;
this->length++;
return *this;
}
STRING::~STRING()
{
if (this->content != NULL)
delete[]this->content;
}
int main()
{
CHAR c1, c2('c');
STRING s1, s2("s2"), s3('a'), s4(c1);
s1.expand('a');
return 0;
}