Write a program to read a list of exam scores given as integer percentages in the range 0 to 100. Display the total number of grades and the number of grades in each letter-grade category as follows: 90 – 100 is an A, 80 to 89 is a B, 70 to 79 is C, 60 to 69 is D and 0 to 59 is an F. Use a negative number to indicate the end of the input. Give the percentage of total for each letter grade, Give the range of the scores: lowest and highest and the average score.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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I need help with creating a Java program based with the loop methods:

Write a program to read a list of exam scores given as integer percentages in the range 0 to 100. Display the total number of grades and the number of grades in each letter-grade category as follows: 90 – 100 is an A, 80 to 89 is a B, 70 to 79 is C, 60 to 69 is D and 0 to 59 is an F. Use a negative number to indicate the end of the input. Give the percentage of total for each letter grade, Give the range of the scores: lowest and highest and the average score.

 

 

The output is shown below:

98 87 86 85 85 78 73 72 72 72 70 66 63 50 -1

 

Total number of grades = 14

Number of A’s = 1   7.142 %

Number of B’s = 4   28.571 %

Number of C’s = 6   42.257 %

Number of D’s = 2   14.285 %

Number of F’s = 1    7. 142 %

The lowest grade is 50

The highest grade is 98

The average score is 75.5

 

I need to have variables that are needed in the loop and update them with each input value.  After the loop do the calculations for percent, and average score.

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