Objectives:
• Learn how to use structure array and type casting.
• Learn how to use a header file.
Description:
• Modify your functions from the pre-lab and lab 4: createArray, getArraySize, and freeArray.
• In createArray function, create an array of 10 Record structures where 42000 ≤ Salary ≤ 89900, using rand() function, and 0 ≤ Employee ID (EID) ≤ 9.
• Each Record should look like as follows:
typedef struct {
int EID;
double salary;
} Record;
• Store an integer array size at the beginning of the array.
After updating your createArray(), your array should look like this:
size
employee[0]
employee[1]
employee[2]
…
employee[9]
10
EID: 0
EID: 1
EID: 2
…
EID: 9
Salary: 35290.55
Salary: 46677.89
Salary: 59788.56
Salary:67789.89
Main function steps:
• Call createArray function.
• Sum up each employee’s salary in the array.
• Print out the result as shown in the Example below.
• Free the allocated array using your freeArray function.
Every user-defined function must have a comment describing:
• What function does;
• What parameter values are;
• What value it returns.
Example from terminal window:
• gcc main.c lab5.c -Wall -Werror
• ./a.out
The summation of 10 employees’ salary is $1802044.56
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Section A
Grading Criteria:
•
Main program:
6 points
•
createArray function:
12 points
•
getArraySize function:
6 points
•
freeArray function:
6 points
Note:
• If your code does not compile with –Wall and –Werror, you will receive a zero for this assignment.
• You need to finish at least three peer reviews within three days of this lab. Otherwise, you will get a 20% penalty.
• You will lose points if you don’t have enough comments.
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