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- /* Antonio Villanueva RPN calculator
- */
- #include <iostream>
- #include <vector>
- #include <cmath> // std::nan
- using namespace std;
- class CalculadoraRPN{
- public :
- CalculadoraRPN (double n1 , double n2, double op) : n1(n1) , n2(n2) ,op(op){};
- double calculaOperacion(){
- switch (op){
- case '*':
- case 'x':return n1*n2;
- case '+':return n1+n2;
- case '-':return n1-n2;
- case '/':return n2!=0 ? n1/n2 :std::nan("");
- }
- return std::nan("");
- };
- private:
- double n1,n2;
- char op;
- };
- int main(void)
- {
- CalculadoraRPN calculo(5.0,0.0,'/');
- cout <<calculo.calculaOperacion()<<endl;
- return 0;
- }
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