char str[] = "Hi blah blah";
// add 1 to the first character, syntax is idental to int
++str[0];

#include<iostream>
#include<fstream>
 
using namespace std;
 
const int SIZEMAX = 81;
 
void read(fstream &);
 
int main()
{
 
       fstream dataFile;
 
       dataFile.open("file.txt", ios::in);
        if(dataFile.fail())
    {
      cout << "The file does not exist. Please check your file." 
      <<    endl;
 
          return 0;
    }
 
 
        read(dataFile); 
 
         dataFile.close();
       cout << endl << "Done" << endl;
 
 
    return 0;
 
}
 
 
       void read(fstream &file)
{
        char line[SIZEMAX];
 
           while( file >> line)
          { 
               cout << line << endl;
           }
 }

int i = 0;
while(myString[i]) {
    std::cout << static_cast<int>(myString[i]) << " ";
    i++;
}
std::cout << std::endl;