Adding the C code.

I'm keeping the Java file for now as reference.

CMakeLists.txt

@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 2.6)
+project(MMMCalc)
+
+set(CMAKE_C_FLAGS "-Wall -Wextra -pedantic-errors")
+set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS} -g -O0")
+set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS} -O3")
+set(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS} -g -O3")
+set(CMAKE_C_FLAGS_MIN_SIZEREL "${CMAKE_C_FLAGS} -Os")
+
+set(SRCS
+    src/Main.c)
+
+add_executable(mmmcalc ${SRCS})