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  1. #include <iostream>
  2. #include <fstream>
  3. #include <string>
  4.  
  5. using namespace std;
  6. int main() {
  7. 	string File_name, Subject, Grade;
  8. 	int i = 0, sum = 0, GPA = 0; 
  9. 	fstream inputStream;
  10.  
  11. 	cout << "Enter Your File Name:";
  12. 	cin  >> File_name;
  13. 	inputStream.open(File_name);
  14.  
  15. 	//錯誤處理:無法開啟要求重輸
  16.  
  17. 	inputStream >> Subject >> Grade;
  18. 	//逗點處理
  19. 	while (Subject != "") {
  20. 		if (Grade == "S")
  21. 			sum = sum + 10;
  22. 		else if (Grade == "A")
  23. 			sum = sum + 9;
  24. 		else if (Grade == "B")
  25. 			sum = sum + 8;
  26. 		else if (Grade == "C")
  27. 			sum = sum + 7;
  28. 		else if (Grade == "D")
  29. 			sum = sum + 6;
  30. 		else if (Grade == "E")
  31. 			sum = sum + 5;
  32. 		i = ++i;
  33. 	}
  34.  
  35. 	inputStream.close();
  36.  
  37. 	GPA = sum / i;
  38.  
  39. 	cout << "GPA is: " << GPA << '\n';
  40. 	return 0;
  41. }
Runtime error #stdin #stdout 0.03s 4248KB
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stdin
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E:/score.txt
stdout
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Enter Your File Name:
https://ideone.com/KDP75V
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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