C++

Forum

 
While-Loop Help

rogom (2)
Below is code that reads in student last and first names, various scores and calculates their averages. The first line of the input file is the key that gives max point values for each assignment. I can't seem to get the average to calculate once it starts listing student's, and for some reason it outputs the last student's info twice and then breaks the loop. Any help would be much appreciated.

the input file looks something like:
"Key Key 10 10 10 10 20 20 20 20 100 100

Washingtonian George 10 10 -1 10 20 -1 -1 20 100 80

Doe Jane -1 -1 -1 -1 -1 -1 -1 -1 -1 -1"



1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
 
  studentNum = 0;
    key = true;
    maxPoints = 0;
    
    while (inFile)
    {
        
        
         quizNum = 0;
         quizSum = 0;
         hwNum = 0;
         hwSum = 0;
         examNum = 0;
         examSum = 0;
         
         if ( key == true)
         {
         inFile >> first;
         
         while (quizNum < 4)
         {
               
               inFile >> quiz;
               quizSum += quiz;
               quizNum++;
               }
        
         
         while (hwNum < 4)
         {
               
               inFile >> hw;
               hwSum += hw;
               hwNum++;
               }
         
               
               while (examNum < 2)
               {
                     
                     inFile >> exam;
                     examSum += exam;
                     examNum++;
                     }
               maxPoints = quizSum + hwSum + examSum;
               average = (maxPoints/maxPoints)*100;
               outFile << left << setw(3) << " " << left << setw(12) << last << left << setw(7) << first;
               outFile << left << setw(6) << quizSum << left <<setw(6) << hwSum << left << setw(6) << examSum;
               outFile << left << setw(7) << maxPoints << left << setw(9) << fixed << showpoint << setprecision (2) << average << endl;
               outFile << left << setw(3) << "-" << left << setw(12) << "----------" << left << setw(7) << "-----";
               outFile << left << setw(6) << "----" << left << setw(6) << "---" << left << setw(6) << "----";
               outFile << left << setw(7) << "-----" << left << setw(9) << "-------" << endl;
               
               key = false;
               
                     }
               else
               {
                   inFile >> last >> first;
                   studentNum++;
                   while (quizNum < 4)
         {
               
               inFile >> quiz;
               
               
               if (quiz < 0)
               {
                        quiz = 0;
                        }
               quizSum += quiz;
               quizNum++;
               }
        
         
         while (hwNum < 4)
         {
               
               inFile >> hw;
               
               if (hw < 0)
               {
                      hw=0;
                      }
               hwSum += hw;
               hwNum++;
               }
         
               
               while (examNum < 2)
               {
                     
                     inFile >> exam;
                     
                     if (exam < 0)
                     {
                              exam = 0;
                              }
                     examSum += exam;
                     examNum++;
                     
                     }
               points = quizSum + hwSum + examSum;
               average = (points/maxPoints)*100;  
               outFile << left << setw(3) << studentNum << left << setw(12) << last.substr(0,10) << left << setw(7) << first.substr(0,5);
               outFile << left << setw(6) << quizSum << left <<setw(6) << hwSum << left << setw(6) << examSum;
               outFile << left << setw(7) << points << left << setw(9) << fixed << showpoint << setprecision (2) << average << endl;
         
                     }
                   
                     
                  
         }


output is :
#  Last        First  Quiz  HW    Exam  Total  Average  
-  ----------  -----  ----  ---   ----  -----  -------  
   Key         Key    40    80    200   320    100.00   
-  ----------  -----  ----  ---   ----  -----  -------  
1  Washington  Georg  30    40    180   250    0.00     
2  Doe         Jane   0     0     0     0      0.00     
3  Doe         Jane   0     0     0     0      0.00
Last edited on
Topic archived. No new replies allowed.