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  1. #include <iostream>
  2.  
  3. constexpr size_t cstrlen_11(const char* str) {
  4.   return *str ? 1 + cstrlen_11(str + 1) : 0;
  5. }
  6.  
  7. constexpr size_t cstrlen_14(const char* str) {
  8.   size_t len = 0;
  9.   while (*(str + len) != '\0') {
  10.     ++len;
  11.   }
  12.   return len;
  13. }
  14. int main() {
  15. 	static const size_t s = cstrlen_11("test");
  16. 	std::cout << s;
  17.  
  18. 	int x[cstrlen_14("test")] = {1, 2, 3, 4};
  19.  
  20. 	std::cout << x[2];
  21.  
  22. 	return 0;
  23. }
Success #stdin #stdout 0.01s 5368KB
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Standard input is empty
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43
https://ideone.com/ZBGWWa
compile time strlen
language:
C++14 (gcc 8.3)
created:
175 days ago
visibility:
secret

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