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  1. #include <iostream>
  2. #include <cstdlib>
  3. #include <sstream>
  4.  
  5. using namespace std;
  6.  
  7. int main() {
  8.     string all("+12+400-500+2:+13-50-510+20-66+20:");
  9.     int pos = 0;
  10.     for (;;) {
  11.         int next = all.find(':', pos);
  12.         if (next == string::npos) break;
  13.         string expr(all.substr(pos, next+1));
  14.         istringstream iss(expr);
  15.         int sum = 0;
  16.         while (iss) {
  17.             int n;
  18.             iss >> n;
  19.             sum += n;
  20.         }
  21.         cout << expr.substr(0, expr.size()-1) << " = " << sum << endl;
  22.         pos = next+1;
  23.     }
  24. 	return 0;
  25. }
Success #stdin #stdout 0s 2988KB
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stdin
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Standard input is empty
stdout
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+12+400-500+2 = -86
+13-50-510+20-66+20 = -573
https://ideone.com/ORaFzP
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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