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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int a, b;
  6.    char math_symbol;
  7.    cin >> a >> math_symbol >> b;
  8.    switch (math_symbol) {
  9.    case '+':
  10.       cout << a << math_symbol << b << '=' << a + b << endl;
  11.       break;
  12.    case '-':
  13.       cout << a << math_symbol << b << '=' << a - b << endl;
  14.       break;
  15.       //... itd
  16.    default:
  17.       cerr << "nie podano poprawnego operatora math\n";
  18.       break;
  19.    }
  20. 	return 0;
  21. }
Success #stdin #stdout 0s 4236KB
comments (?)
stdin
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1+2
stdout
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1+2=3
https://ideone.com/2LlRrE
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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