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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
#include <iostream>
#include "records.h"
using namespace std;
Student::Student(int the_id, string the_name){
id = the_id;
name = the_name;
}
int Student::get_id(){
return id;
}
string Student::get_name(){
return name;
}
Course::Course(int the_id, string the_name, unsigned char the_credits){
id = the_id;
name = the_name;
credits = the_credits;
}
int Course::get_id(){
return id;
}
string Course::get_name(){
return name;
}
int Course::get_credits(){
return credits;
}
Grade::Grade(int sid, int cid, char grd){
student_id = sid;
course_id = cid;
grade = grd;
}
int Grade::get_student_id(){
return student_id;
}
int Grade::get_course_id(){
return course_id;
}
char Grade::get_grade(){
return grade;
}
/* StudentRecords methods */
void StudentRecords::add_student(int sid, string sname)
{
students.push_back(Student(sid, sname));
}
void StudentRecords::add_course(int cid, string cname,
unsigned char ccredits)
{
courses.push_back(Course(cid, cname, ccredits));
}
void StudentRecords::add_grade(int sid, int cid, char grade)
{
grades.push_back(Grade(sid, cid, grade));
}
float StudentRecords::get_num_grade(char letter)
{
float cur_grade;
switch (letter) {
case 'A':
cur_grade = 4.0f;
break;
case 'B':
cur_grade = 3.0f;
break;
case 'C':
cur_grade = 2.0f;
break;
case 'D':
cur_grade = 1.0f;
break;
case 'F':
cur_grade = 0.0f;
break;
default:
cur_grade = -1;
break;
}
return cur_grade;
}
std::string StudentRecords::get_student_name(int sid)
{
int i = 0;
while (i < students.size() && students[i].get_id() != sid)
i++;
return students[i].get_name();
}
unsigned char StudentRecords::get_course_credits(int cid)
{
unsigned char creds;
for (Course& c_iter : courses)
if (c_iter.get_id() == cid) {
creds = c_iter.get_credits();
break;
}
return creds;
}
float StudentRecords::get_GPA(int sid)
{
float points = 0.0f;
float credits = 0.0f;
unsigned char cur_creds;
for (Grade& g_iter : grades) {
if (g_iter.get_student_id() != sid)
continue;
cur_creds = get_course_credits(g_iter.get_course_id());
points += get_num_grade(g_iter.get_grade()) * cur_creds;
credits += cur_creds;
}
return points / credits;
}
void StudentRecords::report_card(int sid)
{
// print a report card on the screen
// name course letter grades and GPA.
std::cout << "REPORT CARD:" << std::endl;
std::cout << "Student name: " << get_student_name(sid) << std::endl;
std::cout << "Courses enrolled | Grade" << std::endl;
for (Grade& sgrade : grades ) {
if (sgrade.get_student_id() != sid)
continue;
for (Course& scourse : courses)
if (scourse.get_id() == sgrade.get_course_id())
std::cout << " " <<
scourse.get_name() << ": " <<
sgrade.get_grade() << std::endl;
}
std::cout << std::endl;
std::cout << "Student GPA: " << get_GPA(sid) << std::endl;
}
|
