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  1. //P.S. "de fapt" se scrie dezlegat//
  2.  
  3. #include <iostream>
  4. using namespace std;
  5. int main()
  6. {
  7.     string operation;
  8.     double val1,val2;
  9.     cout<<"Please enter an operation(+,-,*,/,plus,minus,mul,div) followed by two floating-point values separated by a space: ";
  10.  
  11.  
  12.         while(cin>>operation>>val1>>val2)       {
  13.  
  14.                     double res;
  15.  
  16.             if(operation == "plus" || operation=="+")  res=val1+val2;
  17.        else if(operation == "minus"|| operation=="-")  res=val1-val2;
  18.        else if(operation == "mul"  || operation=="*")  res=val1*val2;
  19.        else if(operation == "div"  || operation=="/")   {
  20.  
  21.                     if(val2==0)
  22.                         {
  23.  
  24.                         cout<<"Error! Trying to divide by zero!";
  25. 						break;
  26.                         }
  27.  
  28.                     else{
  29.                     res=val1/val2;}
  30.                                                         }
  31.                                                         else
  32.                                                         {
  33.                                                         	cout<<"Illegal input";
  34.                                                         	break;
  35.                                                         }
  36.  
  37.         cout<<val1<<operation<<val2<<"=="<<res<<endl;
  38.         cout<<"please try again"; }
  39.         cout<<"exit cuz of bad input";
  40. }
Success #stdin #stdout 0s 3236KB
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Please enter an operation(+,-,*,/,plus,minus,mul,div) followed by two floating-point values separated by a space: Illegal inputexit cuz of bad input
https://ideone.com/ORMhbd
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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