Port cpp version to C with cmocka. #1

	name: Test C

	on:
	push:
	paths:
	- 'c/**'
	- '.github/workflows/c.yml'
	pull_request:
	paths:
	- 'c/**'
	- '.github/workflows/c.yml'

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Check out the repo
	uses: actions/checkout@v3

	- name: Set up dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install libcmocka-dev

	- name: Build
	working-directory: c
	run: gcc -std=c99 Ocr.c OcrTest.c -l cmocka -o OcrTest

	- name: Test
	working-directory: c
	run: ./OcrTest

Provide feedback