A Command Line by C++

current commands include:

• commands - shows available commands
• error - sets the error level
• echo - sets the command line start showing level
• exit - exit console
• pause - pauses console until keypress
• clear - clears the console
• print - prints a text
• print_i - prints a text without new line
• var - defines or changes a variable
• var_merge - concatenates the second variable with first one
• var_copy - copies the second variable to first one
• var_unset - unsets and destroys a variable
• show - prints predefined variables
• show_i - prints predefined variables without new line
• math - evaluates and prints math expressions
• math_i - evaluates and prints math expressions without new line
• math_var - evaluates a math expression inside a variable and replaces the expression with the result
• if_s - executes command if condition based on string comparison is true
• if_n - executes command if condition based on numeric comparison is true

no harmful or dangerous commands included

file interpreter

1. create a file
2. write commands inside it
3. open the file with the CLI