Design a Bytecode Instruction Set

Design and document a bytecode instruction set in C.

Requirements:

• Define an Opcode enum with all 16 instructions (OP_PUSH through OP_PRINT)
• Assign each opcode a unique integer value (0-15)
• Implement print_opcode_name() to map opcodes to human-readable names
• Create a struct Instruction with opcode and optional operand
• Implement print_instruction() to show each instruction with its mnemonic and operand
• Print a formatted ISA documentation table showing all opcodes, names, and stack effects
• Include a section showing example bytecode sequences (e.g., PUSH 5; PUSH 3; ADD; PRINT)
• Show stack state before and after each example instruction
• Print a summary comparing stack-based vs register-based designs

Test:

• Show the complete opcode table
• Show example bytecode sequences
• Show stack effects for each instruction