In the cmd / example / main.go file, you need to implement getting an expression from the parameters command line, call its function from the option and display the results (or output error information in the input data).

Reading the input expression has support or pass the expression itself on the command line, or specify a file with an expression.

An optional definition of the file to write to must also be supported the result of the transformation.

Flag for direct reading from the console: -e “+ 5 5”

Flag for reading from a file: -f input.txt

Flag for writing to a file: -o output.txt

Install:

git clone https://github.com/Mixa8503/arch_lab_2.git

Run:

go run ./cmd/example/main.go -e “- 42 1” -o result.txt

go run ./cmd/example/main.go -f input.txt

Test:

go test

Completed by:

• Hakavyi Oleksandr @sanix_to
• Lukianenko Mikhail @lukianenko78