Generate some C, compile it, and run it.

generate_some_c.rb

# Just because you can do something like this doesn't mean you should.
# Executing code via backticks using input from the user is a good way to wreck the host machine.

class GenerateSomeC
  attr_accessor :program_name
  
  def initialize(program_name)
    @program_name = program_name
  end
  
  def generate_app!
    File.open("#{@program_name}.c", "w") do |file|
      file.puts generated_code
    end
    if `gcc #{@program_name}.c -o #{@program_name}`.chomp.length == 0
      puts `./#{program_name}`
    else
      puts "Failed to compile :("
    end
  end
  
  private
  
  def generated_code
    _c = <<-CODE
      #include <stdio.h>
      int main () {
        printf("Hello, my name is #{program_name}");
        return 1;
      }
    CODE
  end
end

generator = GenerateSomeC.new("patrick")
generator.generate_app!