C++ program to parse assembly instructions

Accept file name consisting of assembly language instructions in a single argument. The file can have a series of assembly-language instructions forming a short assembly-language program. Program should read the file 1 line at a time using a state-machine approach. Each line of the file should be either a complete assembly instruction and all necessary data, and possibly a comment or a blank line or a comment line or a label or directive. A complete instruction will be an instruction and its associated data including OPCODE and OPERANDS. The OPCODE will be separated from its OPERANDS with whitespace (either blanks or tabs). OPERANDS will be separate from each other by a comma (“,”) and possibly by additional whitespace. Treat the OPCODE and OPERANDS as the “events” on which we wish to switch the state machine. Trailing commas, incorrect or missing OPERANDS should not be accepted and an error message needs to be printed. Program should keep track of the total number of assembly instructions and their category. For the purpose of categories, there are three broad types: Load/Store instructions, Arithmetic-and-Logic-Unit instructions, and Compare-and-Jump instructions. After parsing the entire file, you should display on cout the totals for each of these categories.