- #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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