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  1. #include<iostream>
  2. using namespace std;
  3. class sv
  4. {
  5. 	public:
  6. 	int diem1,diem2,diem3;
  7. 	float diemtb;
  8. 	void nhapttsv()
  9. 	{
  10. 		cout<<"nhap diem 1:";cin>>diem1;
  11. 		cout<<"nhap diem 2:";cin>>diem2;
  12. 		cout<<"nhap diem 3:";cin>>diem3;
  13. 	}
  14. 	void xuatttsv()
  15. 	{
  16. 		cout<<"xuat diem 3:"<<diem1<<"\n";
  17. 		cout<<"xuat diem 2:"<<diem2<<"\n";
  18. 		cout<<"xuat diem 3:"<<diem3<<"\n";
  19. 	}
  20. 	float diemtrungbinh()
  21. 	{
  22. 		diemtb=(float)(diem1+diem2+diem3)/3;
  23. 		return diemtb;
  24. 	}
  25. };
  26. int main()
  27. {
  28. 	int n;
  29. 	cout<<"nhap danh sach sinh vien:";cin>>n;
  30. 	sv sinhvien[n];
  31. 	for(int i=0;i<n;i++)
  32. 	{
  33. 		sinhvien[i].nhapttsv();
  34. 		cout<<"-----------------------"<<"\n";
  35. 	}
  36. 	for(int i=0;i<n;i++)
  37. 	{
  38. 		cout<<"diem trung binh cua sv la:"<<sinhvien[i].diemtrungbinh()<<"    ";
  39. 		cout<<sinhvien[i].diemtb;
  40. 		cout<<"-----------------------"<<"\n";
  41. 	}
  42. 	float max;
  43. 	for(int i=0;i<n;i++)
  44. 	{
  45. 		for(int j=i+1;j<n;j++)
  46. 		{
  47. 			if(sinhvien[i].diemtrungbinh()>sinhvien[j].diemtrungbinh())
  48. 			{
  49. 				max=sinhvien[i].diemtrungbinh();
  50. 				sinhvien[i].diemtrungbinh()=sinhvien[j].diemtrungbinh();
  51. 				sinhvien[j].diemtrungbinh()=max;
  52. 			}
  53. 		}
  54. 		cout<<sinhvien[i].diemtrungbinh()<<"  ";
  55. 	}
  56. 	return 0;
  57. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:50:59: error: lvalue required as left operand of assignment
     sinhvien[i].diemtrungbinh()=sinhvien[j].diemtrungbinh();
                                                           ^
prog.cpp:51:33: error: lvalue required as left operand of assignment
     sinhvien[j].diemtrungbinh()=max;
                                 ^~~
stdout
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Standard output is empty
https://ideone.com/EEXZyJ
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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