Using Case Function To Read File Lines

[nathanpc]

Hello,
I want to build a program that read all the lines of a file and with some case functions. Here is a file example:

example.txt

test
example

And here is some example of case function:

case test:
   cout << "Hello, World";
[...]
case example:
   cout << "Enter a number: ";
        cin >> number;

But i want that my program reads this sample file, read it's content and put the things that are in the case function in the screen(command line, in Linux: Terminal) in the order that is in the file.

Thanks,
Nathan Paulino Campos

[ixSci]

The simplest way is to compare string which you read from file with the string which you code in your program.
Your case function would something like this

void foo(std::string xStr)
{
    if(xStr == "example")
       //do something
    else if(xStr == "test")
      //do other thing
    ...
}

or you can use more complex and more cute method: read line from file, calculate its hash with some hash function and compare its hash with already coded hash in your application. Something like this:

void foo(size_t uiHash)
{
    switch(uiHash)
    {
         case uiExampleHash:
           //Do something
            break;
          ...
    };

}