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  1. #include <cstdio>
  2. #include <iostream>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	for (auto s : {"-123", "--123", "+123", "++123", "00.00"}) {
  7. 		cout << "'" << s << "': "; 
  8. 		int64_t x{};
  9. 		if (sscanf(s, "%li", &x)) {
  10. 			cout << x;
  11. 		} else {
  12. 			cout << "CANNOT PARSE";
  13. 		}
  14. 		cout << endl;
  15. 	}
  16. 	return 0;
  17. }
Success #stdin #stdout 0.01s 5424KB
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stdin
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Standard input is empty
stdout
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'-123': -123
'--123': CANNOT PARSE
'+123': 123
'++123': CANNOT PARSE
'00.00': 0
https://ideone.com/7iKg8l
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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