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  1. #include <iostream>
  2. using namespace std;
  3. int main()
  4. {
  5.     string operation;
  6.     double val1,val2;
  7.     cout<<"Please enter an operation(+,-,*,/,plus,minus,mul,div) followed by two floating-point values separated by a space: ";
  8.  
  9.  
  10.         while(cin>>operation>>val1>>val2)       {
  11.  
  12.                     double res;
  13.  
  14.             if(operation == "plus" || operation=="+")  res=val1+val2;
  15.        else if(operation == "minus"|| operation=="-")  res=val1-val2;
  16.        else if(operation == "mul"  || operation=="*")  res=val1*val2;
  17.        else if(operation == "div"  || operation=="/")   {
  18.  
  19.                     if(val2==0)
  20.                         {
  21.  
  22.                         cout<<"Error! Trying to divide by zero!";
  23.  
  24.                         }
  25.  
  26.                     else{
  27.                     res=val1/val2;}
  28.                                                         }
  29.  
  30.         cout<<val1<<operation<<val2<<"=="<<res<<endl;
  31.         cout<<"please try again"; }
  32.         cout<<"exit cuz of bad input";
  33. }
Success #stdin #stdout 0s 3280KB
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stdin
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/
8
0
stdout
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Please enter an operation(+,-,*,/,plus,minus,mul,div) followed by two floating-point values separated by a space: Error! Trying to divide by zero!8/0==-4.75195e-42
please try againexit cuz of bad input
https://ideone.com/gQe5Zp
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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