Сортировка букв английского алфавита

void SetsManipulation::sortA()
{
    int count=0;
    for(int k=0;setOne[k]!='\0';k++)
    {
        count++;
    }
    for (int i=0;i<count-1;i++)
    for (int j=i+1;j<count;j++)
    if(setOne[i]>setOne[j])
    {
    swap(setOne[i],setOne[j]);
    }
    cout<<setOne<<endl;
}

SetsManipulation::SetsManipulation(char* s1,char* s2)
{
    for(int i=0;s1[i]!='\0';i++)
    {
        setOne[i]=s1[i];
    setTwo[i]=s2[i];
    }
}

void SetsManipulation::DTOR()

SetsManipulation::SetsManipulation(char* s1,char* s2)
{
    int size = 1;
    for(int i = 0; s1[i] != '\0'; ++i)
        ++size;
 
    setOne = new char[size];
    
    for(int i = 0; i < size; ++i)
        setOne[i] = s1[i];
 
    size = 1;
    for(int i = 0; s2[i] != '\0'; ++i)
        ++size;
 
    setTwo = new char[size];
 
    for(int i = 0; i < size; ++i)
        setTwo[i] = s2[i];
}
 
SetsManipulation::~SetsManipulation()
{
    delete [] setOne;
    delete [] setTwo;
}

void SetsManipulation::DTOR()
{
    for(int i=0;setOne[i]!='\0';i++)
    {
        cout<<setOne[i];
    }
}

SetsManipulation::SetsManipulation(char* s1,char* s2)
{
    while ( (*setOne++ = *s1++) != '\0')
        ;
    while ( (*setTwo++ = *s2++) != '\0')
        ;
}

SetsManipulation::SetsManipulation(char* s1,char* s2)
{
    for(int i=0;s1[i]!='\0';i++)
    {
    setOne[i]=s1[i];
    }
    for(int j=0;s1[j]!='\0';j++)
    {
    setTwo[j]=s2[j];
    }
}

SetsManipulation::SetsManipulation(char* s1,char* s2)
{
    while ( (*setOne++ = *s1++) != '\0')
        ;
    while ( (*setTwo++ = *s2++) != '\0')
        ;
}

SetsManipulation::SetsManipulation(char* s1,char* s2)
{
    int i;
    for (i = 0; s1[i] != '\0'; ++i)
        setOne[i] = s1[i];
    setOne[i] = '\0';
    for (i = 0; s2[i] != '\0'; ++i)
        setTwo[i] = s2[i];
    setTwo[i] = '\0';
}

SetsManipulation::SetsManipulation(char* s1,char* s2)
{
    for (char *a = setOne, *b = s1; *a++ = *b++;)
        ;
    for (char *a = setTwo, *b = s2; *a++ = *b++;)
        ;
}

#include <iostream>
int main(){
    std::string str("123");
    std::cout << static_cast<int> (str[str.size()]);
}

SetsManipulation::SetsManipulation(char* s1,char* s2)
{
    for (char *p = setOne; (*p = *s1); ++p, ++s1)
        ;
    for (char *p = setTwo; (*p = *s2); ++p, ++s2)
        ;
}

#include <iostream>
int main(){
    std::string str("123");
    std::cout << static_cast<int> (str.at(str.size()));
}

SetsManipulation::SetsManipulation(char* s1,char* s2)
{
    int i;
    for (i = 0; s1[i] != '\0'; ++i)
        setOne[i] = s1[i];
    setOne[i] = '\0';
    for (i = 0; s2[i] != '\0'; ++i)
        setTwo[i] = s2[i];
    setTwo[i] = '\0';
}

SetsManipulation::SetsManipulation(char* s1,char* s2)
{
    int count1=0, count2=0;
    for (int i=0;s1[i]!='\0';i++)
    {
        setOne[i] = s1[i];
        count1++;
    }
        setOne[count1] = '\0';
    for (int j=0;s2[j]!='\0';j++)
    {
        setTwo[j] = s2[j];
        count2++;
    }
        setTwo[count2] = '\0';
}