#include <iostream>
using namespace std;
int main() {
float n1, n2, resultado;
int s;
cout << "Digite um número para começar";
cin >> n1;
cout << endl << "Vc quer (1)somar (2)diminuir (3)mutiplicar (4)dividir";
cin >> s;
cout << endl << "Com qual valor?";
cin >> n2;
switch(s) {
case 1:
resultado = n1 + n2;
break;
case 2:
resultado = n1 - n2;
break;
case 3:
resultado = n1 * n2;
break;
case 4:
resultado = n1 / n2;
break;
default:
cout << endl << "Error 404";
return 0;
}
cout << endl << "O resultado é " << resultado << endl;
}
//https://pt.stackoverflow.com/q/282205/101
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