Cmm Documentation

C-- is a general-purpose, procedural programming language like C.

There is a main function in this language that executes at first.

Codes of this language are in a file with the .cmm suffix.

General Structure

A program in C-- language contains these parts :

• Struct Declarations
• Function Declarations
• main Declaration

A simple C-- program is like this :

struct Student begin
    int grade
    bool pass
end

bool check_pass(struct Student std)
    return std.pass

main() begin
    struct Student std;
    display(check_pass(std));
end

Syntactic Rules

• This language is case sensitive.
• tab and space doesn't change​ the ​output of the ​program.

Types

C-- has two primitive types :

• int
• bool

Moreover, C-- has list and fptr types.

Operators

There are 4 types of operators in C--.

Calculating Operators

All of these operators used on numbers. If we assume A=20 and B=10 we have something like this :

Example	Description	Associative	Operator
A + B = 30	Add	Left	+
A - B = 10	Sub	Left	-
A * B = 200	Mult	Left	-
A/B = 2 B/A = 0	Div	Left	/
-A=-20	Minus	Right	-

Comparison Operators

These operators compare two value and their output is true or false

Example	Description	Associative	Operator
(A == B) = false	Equal	Left	==
(A < B) = false	Less Than	Left	<
(A > 20) = true	Greater Than	Left	>

Logical Operators

Logical operators just can applied on bool values.

Example	Description	Associative	Operator
(A & B) = false	Logical And	Left	&
(A | B) = true	Logical Or	Left	|
~A = false	Logical Not	Right	~

Assign Operator