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#include <iostream>
using std::cin;
using std::cout;
using std::endl;
using std::ios;
#include <cstring>
#include <cstdlib>
#include <iomanip>
using std::left;
class course
{
public:
char className[11]; // Class array
char term[7]; // Term array
int units; // Units
char grade; // Grade
course* next; // Next node
};
// Prototypes
void printCourse(course*);
int myStCmp(const char*, const char*);
int myStrCmp(const char*, const char*, size_t count);
int courseCmp(const course*, const course*);
int main()
{
cout << endl;
// set up for new entry
char classEntry;
// set empty list
course* head = 0;
course* cEntry = 0;
while(1)
{
// print blank course history
printCourse(head);
cout << endl;
// ask user if they want to add a course
cout << "Enter another class to your history? [Y/N]: ";
cin >> classEntry;
cin.ignore(1000, 10);
cout << endl;
// if user doesnt want to add print course history
if (classEntry == 'N' || classEntry == 'n')
{
printCourse(head);
break;
}
//
if (classEntry == 'Y' || classEntry == 'y')
{
cEntry = new course;
cout << "COURSE: Enter your course name [10 Characters Max]: ";
cin.getline(cEntry->className, 11);
cout << endl;
cout << "TERM: Enter the term [Ex: fa2011, 6 Characters Max]: ";
cin.getline(cEntry->term, 7);
cout << endl;
cout << "UNITS: Enter # of units [1-5]: ";
cin >> cEntry->units;
cin.ignore(1000, 10);
cout << endl;
cout << "GRADE: Enter your grade [letter grade (A->F, or W if incomplete]: ";
cin >> cEntry->grade;
cin.ignore(1000, 10);
// create list if the head is empty
if (head == 0)
{
head = cEntry;
head->next = 0;
}
// compare and arrange in order
else
{
course* x = head;
if (courseCmp(x, cEntry) == 1)
{
while (courseCmp(x, cEntry) == 1)
{
if (x->next != 0 && courseCmp(x->next, cEntry) != -1)
x = x->next;
else
break;
}
cEntry->next = x->next;
x->next = cEntry;
} // End if
else
{
cEntry->next = x;
head = cEntry;
}
}
}
}
// Deallocate memory
while (head)
{
course* n = head->next;
delete head;
head = n;
}
}
// create blank class history to be printed and updated
void printCourse(course* h)
{
if (h)
cout << endl;
cout << " CURRENT CLASS HISTORY \n";
cout << " --------------------- \n";
cout << endl;
cout.setf(ios::left, ios::adjustfield);
cout << setw(20) << " COURSE" << setw(10) << " TERM" << setw(10);
cout << " UNITS" << setw(10) << " GRADE" << endl;
cout << " ------ ---- ----- -----" << endl;
for(course* i = h; i; i = i->next)
{
cout.setf(ios::left, ios::adjustfield);
cout << " " << setw(10) << i->className;
cout << " " << setw(10) << i->term;
cout.setf(ios::adjustfield);
cout << setw(3) << i->units;
cout.setf(ios::right, ios::adjustfield);
cout << setw(10) << i->grade;
cout << endl;
cout << " ------------|----------|---------|--------" << endl;
}
}
// course compare function
int courseCmp(const course* a, const course* b)
{
// make sure string is correct length
if ((strlen(a->term) != 6) || (strlen(b->term) != 6)) // in cstring
return myStCmp(a->className, b->className);
// if the same
if (myStCmp(a->term, b->term) == 0)
return myStCmp(a->className, b->className);
// determine year order
int yearA = atoi(a->term + 2);
int yearB = atoi(b->term + 2);
if (yearA < yearB)
return -1;
if (yearA > yearB)
return 1;
// compare semester in accordance to year
if (myStrCmp(a->term, "SP", 2) == 0)
return -1;
if (myStrCmp(a->term, "SU", 2) == 0)
return myStrCmp(b->term, "SP", 2) ? -1 : 1;
return 1;
}
int myStCmp(const char* dst, const char* src)
{
int f, l;
do
{
if (((f = (unsigned char)(*(dst++))) >= 'A') && (f <= 'Z')) f -= 'A' - 'a';
if (((l = (unsigned char)(*(src++))) >= 'A') && (l <= 'Z')) l -= 'A' - 'a';
}
while (f && (f == l));
return(f - l);
}
int myStrCmp(const char* dst, const char* src, size_t count)
{
int f, l;
do
{
if (((f = (unsigned char)(*(dst++))) >= 'A') && (f <= 'Z')) f -= 'A' - 'a';
if (((l = (unsigned char)(*(src++))) >= 'A') && (l <= 'Z')) l -= 'A' - 'a';
}
while (--count && f && (f == l));
return (f - l);
}
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