#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct Course {
char section[4];
char Subject[5];
char Catalog[5];
char Name[31];
char Building[5];
char Room[5];
char MtgStart[6];
char MtgEnd[6];
char Mon[2];
char Tues[2];
struct Course *next;
};

struct EligibleCourse {
char Subject[5];
char Catalog[5];
int SearchCount;
struct EligibleCourse *next;
};

struct EligibleCourse *newEligibleCourse() {
struct EligibleCourse *course = (struct EligibleCourse *) malloc(sizeof(struct EligibleCourse));
course->next = NULL;
course->SearchCount = 0;
return course;
}

struct Course *newCourse() {
struct Course *course = (struct Course *) malloc(sizeof(struct Course));
course->next = NULL;
return course;
}

struct Course *copyCourse(struct Course *c) {
struct Course *course = (struct Course *) malloc(sizeof(struct Course));
strcpy(course->section, c->section);
strcpy(course->Subject, c->Subject);
strcpy(course->Catalog, c->Catalog);
strcpy(course->Name, c->Name);
strcpy(course->Building, c->Building);
strcpy(course->Room, c->Room);
strcpy(course->MtgStart, c->MtgStart);
strcpy(course->MtgEnd, c->MtgEnd);
strcpy(course->Mon, c->Mon);
strcpy(course->Tues, c->Tues);
course->next = NULL;
return course;
}

void printCourse(struct Course *course) {
if(course != NULL) {
char subCat[20];
char date[20];
strcpy(subCat, course->Catalog);
strcat(subCat, ".");
strcat(subCat, course->section);

strcpy(date, course->MtgStart);
strcat(date, "--");
strcat(date, course->MtgEnd);

printf("%-5s%6s%9s%14s %-2s %3s %-15s\n",
course->MtgStart,
course->Subject,
subCat,
date,
course->Building,
course->Room,
course->Name);
}
}

void display(struct Course *root) {
struct Course *tmp = root;
while(tmp != NULL) {
printCourse(tmp);
tmp = tmp->next;
}
}

void displayEligible(struct EligibleCourse *root) {
struct EligibleCourse *tmp = root;
while(tmp != NULL) {
printf("%s %s\n", tmp->Subject, tmp->Catalog);
tmp = tmp->next;
}
}

void swap(struct Course *course1, struct Course *course2) {
char tmp[31];
strcpy(tmp, course1->section);
strcpy(course1->section, course2->section);
strcpy(course2->section, tmp);

strcpy(tmp, course1->Subject);
strcpy(course1->Subject, course2->Subject);
strcpy(course2->Subject, tmp);

strcpy(tmp, course1->Catalog);
strcpy(course1->Catalog, course2->Catalog);
strcpy(course2->Catalog, tmp);

strcpy(tmp, course1->Name);
strcpy(course1->Name, course2->Name);
strcpy(course2->Name, tmp);

strcpy(tmp, course1->Building);
strcpy(course1->Building, course2->Building);
strcpy(course2->Building, tmp);

strcpy(tmp, course1->Room);
strcpy(course1->Room, course2->Room);
strcpy(course2->Room, tmp);

strcpy(tmp, course1->MtgStart);
strcpy(course1->MtgStart, course2->MtgStart);
strcpy(course2->MtgStart, tmp);

strcpy(tmp, course1->MtgEnd);
strcpy(course1->MtgEnd, course2->MtgEnd);
strcpy(course2->MtgEnd, tmp);

strcpy(tmp, course1->Mon);
strcpy(course1->Mon, course2->Mon);
strcpy(course2->Mon, tmp);

strcpy(tmp, course1->Tues);
strcpy(course1->Tues, course2->Tues);
strcpy(course2->Tues, tmp);
}

int compare(struct Course *course1, struct Course *course2) {

if(strcmp(course1->Mon, "N") == 0 && strcmp(course2->Mon, "Y") == 0){
swap(course1, course2);
return 1;
}else if(
strcmp(course1->Mon, "N") == 0 && strcmp(course2->Mon, "N") == 0 &&
strcmp(course1->Tues, "N") == 0 && strcmp(course2->Tues, "Y") == 0){
swap(course1, course2);
return

4.1 Starter Files Start by getting the files for this week: $...