---

CIS071 Lab12 - Grade Conversion with Structs Due: (Fri Apr 21, 2006)

---

Objectives: Arrays; Arrays of Structs; Lookup (Search) Tables

Lab12: Modify your completed assignment for Lab04 by changing the implementation of the function

char convertGrade (int numScore);

You need to remove the old code you wrote and replace it with code that uses a lookup (search) table to convert a numeric score to a letter grade. The interface for your function and the rest of your program should all remain the same. The specification for the function remains the same, including the return value of Z if the score is out of range.

1. You need to first declare a struct range entry containing three elements:

typedef struct { // declares a new data type

int minScore; // minimum score for a grade range

int maxScore; // maximum score for a grade range

char grade; // grade for the current grade range

} table_type;

and then define the array of these structs as

#define TABLE_SIZE 5

table_type table[TABLE_SIZE];

Conceptually, the resulting table looks like this (and you have to fill the table with the proper values).

minScore maxScore grade

90	100	A
80	89	B
70	79	C
60	69	D
0	59	F

[0]

[1]

[2]

[3]

[4]

2. Accessing any element (a struct) in the array can be done by writing

table[i] where 0 <= i < 5

Accessing a particular component of the struct at element in the array is accomplished by writing (for example) table[i].grade

If i is 3, the value of table[i].grade is ‘D’.

 
Deliverables:
Submit your program; show a few sample runs of the program.