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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. class tl{
  4. 	char ten[30];
  5. 	char mau[30];
  6. 	float gia;
  7. 	public:
  8. 		tl(){
  9. 			strcpy(ten," ");
  10. 			strcpy(mau," ");
  11. 			gia=0;
  12. 		}
  13. 		tl(const char tensp[30],const char mausac[30],float giatien){
  14. 			strcpy(ten,tensp);
  15. 			strcpy(mau,mausac);
  16. 			gia=giatien;
  17. 		}
  18. 		bool operator*(tl y){
  19. 			return (gia>250&&strcmp(mau,"trang")==0);
  20. 		}
  21. 		friend istream&operator>>(istream&x,tl&y);
  22. 		friend ostream&operator<<(ostream&x,tl y);
  23. 		bool operator==(tl y);
  24. };
  25. istream&operator>>(istream&x,tl&y){
  26. 	cout<<"ten :";x>>y.ten;
  27. 	cout<<"mau sac:"; x>>y.mau;
  28. 	cout<<"gia: "; x>>y.gia;
  29. 	return x;
  30. }
  31. ostream&operator<<(ostream&x,tl y){
  32. 	cout<<"ten :"<<y.ten<<endl;
  33. 	cout<<"mau sac:"<<y.mau<<endl;
  34. 	cout<<"gia: "<<y.gia<<endl;
  35. 	return x;
  36. }
  37. bool tl::operator==(tl y){
  38. 	return(strcmp(ten,y.ten)==0&&strcmp(mau,y.mau)==0&&gia==y.gia);
  39. }
  40. int main(){
  41. 	tl a("LG","trang",2000);
  42. 	tl b;
  43. 	cout<<"thong tin tu lanh a: "<<endl;
  44. 	cout<<a<<endl;
  45. 	cout<<"nhap thong tin tu lanh b"<<endl;
  46. 	cin>>b;
  47. 	ofstream f("tl.txt");
  48. 	if(a*a){
  49. 		cout<<"tu lanh a co gia >250 & mau trang!"<<endl;
  50. 		f<<"tu lanh a co gia >250 & mau trang!"<<endl;
  51. 	}
  52. 	else{
  53. 		cout<<"tu lanh a ko co gia >250 & mau trang!"<<endl;
  54. 		f<<"tu lanh a ko co gia >250 & mau trang!"<<endl;
  55. 	}
  56. 	if(b*b){
  57. 		cout<<"tu lanh b co gia >250 & mau trang!"<<endl;
  58. 		f<<"tu lanh b co gia >250 & mau trang!"<<endl;
  59. 	}
  60. 	else{
  61. 		cout<<"tu lanh b ko co gia >250 & mau trang!"<<endl;
  62. 		f<<"tu lanh b ko co gia >250 & mau trang!"<<endl;
  63. 	}
  64. 	if(a==b){
  65. 		cout<<"2 tu lanh co thong tin giong nhau!"<<endl;
  66. 		f<<"2 tu lanh co thong tin giong nhau!"<<endl;
  67. 	}
  68. 	else{
  69. 		cout<<"2 tu lanh ko co thong tin giong nhau!"<<endl;
  70. 		f<<"2 tu lanh ko co thong tin giong nhau!"<<endl;
  71. 	}
  72. 	f.close();
  73. 	return 0;
  74. }
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin 
Standard input is empty
stdout 
thong tin tu lanh a: 
ten :LG
mau sac:trang
gia: 2000

nhap thong tin tu lanh b
ten :mau sac:gia: tu lanh a co gia >250 & mau trang!
tu lanh b ko co gia >250 & mau trang!
2 tu lanh ko co thong tin giong nhau!
https://ideone.com/F88QAK
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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