MyString, C++ (gcc)

MyString

//Title of this code

#include <iostream>
#include <cstring>
#include <cstdlib>
using namespace std;

class MyString {
    char* str;
  
  public:
    MyString(const char*);
    ~MyString();

MyString operator+(MyString&);
    
    friend MyString operator+(const char*, const MyString&);
    MyString operator+(const char*);
    MyString operator+(const char);
    friend ostream& operator<<(ostream&, const MyString&);
    
};

MyString::MyString(const char* s) {
    str = static_cast<char*>(malloc(sizeof(char) * (strlen(s) + 1)));
    strcpy(str, s);
}

MyString::~MyString() {
    free(str);
}

MyString MyString::operator+(MyString& s) {
    return *this + s.str;
}

MyString operator+(const char* s, const MyString& l) {
    MyString ms = MyString(s);
    MyString ms2 = ms;// + l;
    return ms2;
    
}

MyString MyString::operator+(const char* s) {
    char* newStr;
    int newSize = strlen(str) + strlen(s) + 1;
    newStr = static_cast<char*>(malloc(newSize * sizeof(char)));
    
    strcpy(newStr, str);
    strcpy(newStr + (strlen(str)), s);
    
    MyString ms = newStr;
    free(newStr);
    
    return ms;
    
}

MyString MyString::operator+(const char c) {
    char* newStr;
    newStr = static_cast<char*>(malloc((strlen(str) + 1) * sizeof(char)));
    
    strcpy(newStr, str);
    newStr[strlen(str)] = c;
    newStr[strlen(str)+1] = '\0';
    
    MyString ms = newStr;
    free(newStr);
    
    return ms;
    
}

ostream& operator<<(ostream &output, const MyString &s) 
{ 
    output << s.str;
    return output;            
}

int main()
{
    MyString s1("abc");
    MyString s2("def");
    MyString s3 = s1+s2;
    
    cout << s1 << " + " << s2 << " = " << "fff"+s1;
}


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