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Problem 2

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Part a:
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• -2 for redeclaring the parameters.i.e. declaring
  

  	string grade1,grade2,grade3,grade4 
  		     and/or 
  	double value1,value2,value3,value4 
  

  within the function again.
  
  
• upto -4 for not declaring the necessary variables like sum,value,double or declaring them with the wrong type.
  
  
• -2 for spoiling the parameters by assigning them. (for e.g. grade1 = "A" or value1 = 4.0).
  
  
• upto -10 for not having the 3 if statements :

  	if (grade ==  grade2)
  		value = value2;
  	if (grade ==  grade3)
  		value = value3;
  	if (grade ==  grade4)
  		value = value4;
  

  
  
• upto -10 for not accumulating the sum properly as

  	sum = sum + value;
  

  
  
• -5 for not incrementing the counter as

  	counter = counter + 1;
  

  
  
• -5 for not checking for the case when no grades are entered or for checking incorrectly as

  	if (grade == "Z")
  		cout << "No grades entered";
          else 
  	 	cout << sum/counter ;	
  

  (this is wrong because,grade will always be equal to "Z" when the loop terminates.Hence,the else part will never be executed.)
  
  
• -5 if no average is calculated or incorrectly calculated as

  	average = sum/value;
  		or
    	average = sum/grade;
              instead of
          average = sum/counter;
  

Note : No points have been cut off for not intializing the variables or intializing them with incorrect values.Though you are supposed to do that,since there was no comment in the code asking you to initialize the variables,you were not penalized for that mistake.

Part b:
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• -5 for not having main function at all
  
  
• -4 for not passing any argument to the function call or giving incorrect arguments.
  
  
• -1 for passing arguments in the wrong order.
  
  
• -1 for not specifying string constants withing double quotes.(Excellent instead of "Excellent").
  
  
• upto -10 for using loops,getting the grades as input , using if statements , etc. These aren't necessary at all for this part of the problem.That indicates that you have misunderstood the question.