C / C++ / MFC

#include <iostream>
#include <fstream>
#include <string>

int main() {
  std::ifstream file("filename");
  std::string line;

  while (std::getline(file, line)) {
    std::cout << line << '\n';
  }

  return 0;
}

• C++ defines main as: "int main()" or "int main(int argc, char* argv[])". There's nothing in the code that limits us to Visual C++ and its non-standard "void main()" extension.
• Using std::getline (defined in "string") we avoid using a char* buffer as we have to with std::basic_istream<...>::getline.
• Invoking s.c_str() on something we write out using iostreams anyway might incur the following overhead: a char* buffer that can contain the contents is allocated, the contents of s is copied over into it, a terminating null character is added and this buffer is returned. This is because the contents of std::string isn't guaranteed to be null terminated.

#include <iostream>
#include <fstream>
#include <string>

std::string s;

std::ofstream arch("filename");
std::cout << "enter your name: ";
std::getline(std::cin, s);

arch << s;

tempf = fopen("myfile.txt", "r+");

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

class MyForm
{
private :
...
    int values [ 50 ] ;
    int value_count ;
public :
    MyForm () : value_count ( 0 )
    {
        ...
    }
    // add value to array
    void Btn1_Clicked(Object* sender, EventArgs* e)
    {
        if ( value_count < 50 )
        {
            values [ value_count ] = GetValueFromBox () ;
            ++value_count ;
        }
    }
    // calculate average
    void Btn2_Clicked(Object* sender, EventArgs* e)
    {
        int sum = 0 ;
        for ( int c = 0; c < value_count;  ++c )
        {
            sum += value [ c ] ;
        }
        SetValueInBox ( sum / value_count ) ;
    }
    ...
} ;