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  1. #include <iostream>
  2.  
  3. using std::cout;
  4. using std::endl;
  5. using std::cin;
  6.  
  7. int main()
  8. {
  9.     int lhs , rhs , result = 0;
  10.     char oper;
  11.  
  12.     cout << "Please enter an equation [a][sign][b] ex: ( 10 + 2 ):" << endl;
  13.     cin >> lhs >> oper >> rhs;
  14.  
  15.     switch ( oper )
  16.     {
  17.         case '+':
  18.             result = lhs + rhs;
  19.             break;
  20.         case '-': 
  21.             result = lhs - rhs; 
  22.             break;
  23.         case '*': 
  24.             result = lhs * rhs; 
  25.             break;
  26.         case '/': 
  27.             if( rhs == 0 ) 
  28.                 cout << "Error: Can't divide by 0" << endl;
  29.             else 
  30.                 result = lhs / rhs; 
  31.             break;
  32.         default: 
  33.             cout << "Invalid operation" << endl;
  34.     }
  35.  
  36.     cout << lhs << ' ' << oper << ' ' << rhs << " = " << result << endl;
  37.  
  38.     return ( 0 );
  39. }
Success #stdin #stdout 0s 3300KB
comments (?)
stdin 
100 + 123
stdout 
Please enter an equation [a][sign][b] ex: ( 10 + 2 ):
100 + 123 = 223
https://ideone.com/ZKwSVJ
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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