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#include "String2.h"
#include <string.h>
using std::cin;
using std::cout;
int String2::num_strings = 0;
//static method
int String2::HowMany()
{
return num_strings;
}
//class methods
String2::String2(const char * s)
{
len = strlen(s);
str = new char[len+1];
std::strcpy(str, s);
num_strings++;
}
String2::String2()
{
str = new char [1];
str[0] = '\0';
len = 4;
num_strings++;
}
String2::String2(const String2 & st)
{
num_strings++;
len = st.len;
str = new char[len+1];
std::strcpy(str, st.str);
}
String2::~String2()
{
--num_strings;
delete [] str;
}
void String2::stringlow()
{
char * temp;
temp = new char[len + 1];
strcpy(temp, str);
for(int iii = 0; iii < len; iii++)
if(isalpha(temp[iii]))
temp[iii] = tolower(temp[iii]);
strcpy(str, temp);
}
void String2::stringup()
{
char * temp;
temp = new char [len + 1];
strcpy(temp, str);
for(int iii = 0; iii < len; iii++)
if(isalpha(temp[iii]))
temp[iii] = toupper(temp[iii]);
strcpy(str, temp);
}
int String2::cCount(char c)
{
int count = 0;
for(int iii = 0; iii < len; iii++)
if(str[iii] == c)
count++;
return count;
}
//overloaded operator methods
String2 & String2::operator=(const String2 & st)
{
if(this == &st)
return *this;
delete[] str; //REMEMBER TO DELETE WHAT THE CURRENT STRING IS POINTING TOO!!!
len = st.len;
str = new char[len + 1];
strcpy(str, st.str);
return *this;
}
String2 & String2::operator=(const char * c)
{
delete[] str;
len = std::strlen(c);
str = new char[len + 1];
std::strcpy(str, c);
return *this;
}
//combining two strings
String2 String2::operator+(String2 & st)
{
String2 temp;
temp.len = len + st.len + 1;
temp.str = new char[temp.len];
strcpy(temp.str, str);
strcat(temp.str, st.str);
return temp;
}
//Combining a string and a literal string;
String2 operator+(const char * c, String2 & st)
{
String2 temp;
temp.len = st.len + strlen(c) + 1;
temp.str = new char [temp.len];
strcpy(temp.str, c);
strcat(temp.str, st.str); //Append one string to the end of the other
return temp;
}
//read write access for non-const String
char & String2::operator[](int i)
{
return str[i];
}
//read access for const string
const char & String2::operator[](int i) const
{
return str[i];
}
//operator overloading friends
bool operator<(const String2 & st, const String2 & st1)
{
return (std::strcmp(st.str, st1.str) < 0);
}
bool operator>(const String2 & st, const String2 & st1)
{
return (st1.str < st.str);
}
bool operator==(const String2 & st, const String2 & st1)
{
return (std::strcmp(st.str, st1.str) == 0);
}
std::ostream & operator<<(std::ostream & os, const String2 & st)
{
os << st.str;
return os;
}
std::istream & operator>>(std::istream & is, const String2 & st)
{
char temp[String2::CINLIM];
is.get(temp, String2::CINLIM);
if(is)
st = temp; //THIS RETURNS THE ERROR!! :(
while(is && is.get() != '\n')
continue;
return is;
}
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