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  1. #include <iostream>
  2. #include <cstring>
  3.  
  4. template<size_t maxsize>
  5. class str {
  6. private:
  7. 	char buf[maxsize];
  8. public:
  9. 	str(void){}
  10. 	str(const str& s) { std::strcpy(buf, s.buf);}
  11. 	str(const char* s){ std::strcpy(buf, s);}
  12. public:
  13.  
  14. 	str& operator = (const str& s){
  15. 		if(this != &s)
  16. 			std::strcpy(buf, s.buf);
  17. 		return *this;
  18. 	}
  19.  
  20. 	str& operator += (const str& s){
  21. 		if(this != &s)
  22. 			std::strcat(buf, s.buf);
  23. 		return *this;
  24. 	}
  25.  
  26. 	friend str operator + (const str& s1, const str& s2){
  27. 		str o(s1);
  28. 		return o += s2;
  29. 	}
  30.  
  31. 	friend std::istream& operator >> (std::istream& _in, str& s){
  32. 		return _in.get(s.buf, maxsize - 1);
  33. 	}
  34.  
  35. 	friend std::ostream& operator << (std::ostream& _out, const str& s){
  36. 		return _out << s.buf;
  37. 	}
  38.  
  39. 	bool operator < (const str& s) const {
  40. 		return (std::strcmp(buf, s.buf) < 0);
  41. 	}
  42.  
  43. 	bool operator > (const str& s) const {
  44. 		return (std::strcmp(buf, s.buf) > 0);
  45. 	}
  46.  
  47. 	bool operator == (const str& s) const {
  48. 		return (! std::strcmp(buf, s.buf));
  49. 	}
  50.  
  51. 	const char* get(void) const { return &buf[0]; }
  52. };
  53.  
  54.  
  55. int main(void){
  56. 	str<64> s;
  57. 	std::cout << "Enter str: ";
  58. 	std::cin  >> s;
  59. 	std::cin.sync();
  60.  
  61. 	if(s == "exit")
  62. 		return 0;
  63.  
  64. 	s  = "-[" + s + "]-";
  65. 	s += "\tfin"; 
  66. 	std::cout << s << std::endl;
  67.  
  68. 	str<64> p = s;
  69. 	if(p == s)
  70. 		std::cout << "yes cmp.\n";
  71. 	std::cin.get();
  72. 	return 0;
  73. }
Success #stdin #stdout 0s 3416KB
comments (?)
stdin
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hello end
stdout
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Enter str: -[hello end]-	fin
yes cmp.
https://ideone.com/zizPzb
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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