Dynamische Operationsverteilung über Funktionszeiger-Sprungtabellen-Matrix

#include <stdio.h>
 
typedef enum {
    OP_ADD,
    OP_SUB,
    OP_MUL,
    OP_COUNT
} OpCode;
 
typedef int (*OpHandler)(int, int);
 
static int exec_add(int a, int b) { return a + b; }
static int exec_sub(int a, int b) { return a - b; }
static int exec_mul(int a, int b) { return a * b; }
 
static const OpHandler JUMP_TABLE[OP_COUNT] = {
    [OP_ADD] = exec_add,
    [OP_SUB] = exec_sub,
    [OP_MUL] = exec_mul
};
 
int dispatch_op(OpCode code, int operand1, int operand2) {
    if (code < 0 || code >= OP_COUNT) {
        return 0;
    }
    return JUMP_TABLE[code](operand1, operand2);
}