diez.miaw

PUSH 8
PUSH 2
ADD
PUSH 32
ADD
PRINT
PUSH 42
PRINT
PUSH 100
PRINT
PUSH 21
DUP
ADD
PRINT

miaw.cpp

#include <iostream>
#include <string>
#include <stdlib.h>
using namespace std;

int main() {
    int pila[100];
    int tope = 0;
    
    string instr;
    
    while (cin >> instr) {
        if (instr == "PUSH") {
            int val;
            cin >> val;
            
            pila[tope] = val;
            tope += 1;
        } else if (instr == "ADD") {
            if (tope < 2) {
                abort();
            }
            
            int a = pila[tope - 1];
            int b = pila[tope - 2];
            
            tope -= 2;
            
            pila[tope] = a + b;
            tope += 1;
        } else if (instr == "PRINT") {
            if (tope < 1) {
                abort();
            }
            
            int val = pila[tope - 1];
            tope -= 1;
            
            cout << val << endl;
        } else if (instr == "DUP") {
            if (tope < 1) {
                abort();
            }
            
            int val = pila[tope - 1];
            pila[tope] = val;
            tope += 1;
        } else {
            cerr << "mala instruccion" << endl;
            abort();
        }
    }
}

miaw2.cpp

#include <iostream>
#include <string>
#include <stdlib.h>
using namespace std;

int main() {
    int pila[100];
    int tope = 0;
    
    string instr;
    
    cout << "#include <stdio.h>" << endl;
    cout << "int main() {" << endl;
    cout << "int pila[100] = { 0 }, tope = 0, x1, x2;" << endl;
    
    while (cin >> instr) {
        if (instr == "PUSH") {
            int val;
            cin >> val;
            
            cout << "pila[tope] = " << val << ";" << endl;
            cout << "tope += 1;" << endl;
        } else if (instr == "ADD") {
            cout << "x1 = pila[tope - 1];" << endl;
            cout << "x2 = pila[tope - 2];" << endl;
            cout << "tope -= 2;" << endl;
            cout << "pila[tope] = x1 + x2;" << endl;
            cout << "tope += 1;" << endl;
        } else if (instr == "PRINT") {
            cout << "x1 = pila[tope - 1];" << endl;
            cout << "tope -= 1;" << endl;
            cout << "printf(\"%d\\n\", x1);" << endl;
        } else if (instr == "DUP") {
            cout << "x1 = pila[tope - 1];" << endl;
            cout << "pila[tope] = x1;" << endl;
            cout << "tope += 1;" << endl;
        } else {
            cerr << "mala instruccion" << endl;
            abort();
        }
    }
    
    cout << "}" << endl;
}