A problem

The input consists of

• Points earned on homework, an integer.
• The total points available for homework, an integer.
• Weight of the homework in the final grade, a float.
• Points earned on programs, an integer.
• Total points available for programs, an integer.
• Weight of the programs in the final grade, a float.
• Test average, a float.
• Weight of the test in the final grade, a float.
• Final exam grade, a float.
• Weight of the final exam, a float.

In general a weighted average portion of the grade is calculated by $\frac{\text{points earned}}{\text{total points}} \times \text{weight}$. So if a person earned 35 points for homework out of a total of 40, and homework was worth 10% (0.1), the home points would be $\frac{35}{40}\times 0.1 = 0.0875$

For tests, assume that the average has been computed so the input value must be multiplied by the weight.

The final average is found by summing all of the weighted averages and dividing by the sum of the weights. This will allow for computation of the grade when a portion, such as the final exam, is missing. The user just supplies a 0, 0 for the last two inputs.

An example run should look like:

Enter the points earned on homework => 80
Enter the total homework points available => 100
Enter the weight of the homework => .1

Enter the points earned on program => 90
Enter the total program points available => 100
Enter the weight of the program => .45
Enter the test average => .85
Enter the test weight => .3
Enter the final exam score => .95
Enter the final exam weight => .15

Averages
Homework: 80%
Program: 90%
Test: 85%
Final Exam: 95%
The class average is 88% 

An Algorithm

 Set tempTotal to 0
 set totalWeight to 0

 Compute the weighted average of for the homework with Average1
 Compute the weighted average of the programs with Average1
 Compute the weighted average of the tests with Average2
 Compute the weighted average of the final with Average2
 Compute final average =  tempTotal / totalWeight  

 Print Results

--------------------
 Average1
    Ask for the points earned for the item.
    Ask for the total points for the item.
    Ask for the weight of the item.

    compute itemAverage = points earned / total points
    compute itemCotrib = itemAverage * itemWeight
    add itemContrib to tmpTotal
    add itemWeight to totalWeight

Average 2
    Ask for the average for the item.
    Ask for the weight for the item.

    compute itemCotrib = itemAverage * itemWeight
    add itemContrib to tmpTotal
    add itemWeight to totalWeight