#include
<fstream>#include
<string>#include
<iostream>#include
<iomanip>using
namespace std;class
course{public
:string CRN;
string title;
string department;
string room;
};
//courseclass
student{public
:string fname, lname, major;
double
gpa;course courses[10];
};
//studentstudent e[100];
course c[100];
int
n=0;int
z=0;// student functions
void
load(){ifstream studentFile("students.txt", ios::in);
ifstream courseFile("courses.txt", ios::in);
while
(studentFile>>e[n].fname>>e[n].lname>>e[n].major>>e[n].gpa){n++;}
//WHILEwhile
(courseFile>>c[z].CRN>>c[z].title>>c[z].department>>c[z].room){z++;}
//WHILE}
//LOAD the studentvoid
store(){ofstream studentFile("students.txt",ios::out);
for
(int i=0; i<n; i++){if
(e[i].fname!=" ")studentFile<<e[i].fname<<" "<<e[i].lname<<" "<<e[i].major<<" "<<e[i].gpa<<endl;
//" "insert space between the words
}
//FORofstream courseFile("courses.txt", ios::out);
for
(int j=0; j<z; j++){if
(c[j].CRN!=" ")courseFile<<c[j].CRN <<" "<<c[j].title<<" "<<c[j].department<<" "<<c[j].room<<endl;
}
//FOR}
//STOREvoid
insert(){cout<<"Enter student's first name: "; cin>>e[n].fname;
cout<<"Enter student's last name: "; cin>>e[n].lname;
cout<<"Enter student's major: "; cin>>e[n].major;
if
(cin.fail()){cout<<"Error\n"; exit(1);}
cout<<"Enter studen's gpa: "; cin>>e[n].gpa;
n++;
}
//INSERTS THE RECORD TO ARRAYvoid
display(){cout<<setiosflags(ios::left)<<setw(15)<<"First Name"<<setw(15)<<"Last Name";
cout<<setw(10)<<"Major"<<setw(10)<<"GPA";
cout<<endl<<endl;
cout<<setiosflags(ios::fixed|ios::showpoint|ios::left);
for
(int i=0;i<n;i++){if
(e[i].fname!=" "){cout<<setiosflags(ios::left)<<setw(15)<<e[i].fname<<setw(15)<<e[i].lname;
cout<<setprecision(2)<<setiosflags(ios::left)<<setw(10)<<e[i].major;
cout<<setw(10)<<e[i].gpa;
cout<<resetiosflags(ios::left)<<endl;}
//IF}
//FOR}
//THIS FUNCTION DISPLAYS ALL RECORDS IN ARRAYint
search(string s){for
(int i=0;i<n;i++) if(s==e[i].lname) return i;//FORreturn
-1;}
//SEARCH BY NAME,-1 NOT FOUNDvoid
update(){string searchn;
cout<<"Enter the Last Name of the Student to be modified: "; cin>>searchn;
int
i=search(searchn);if
(i==-1) cout<<"STUDENT NOT LISTED"<<endl;else
{cout<<endl<<"Please enter the updated information."<<endl;
cout<<"Enter student's first name: "; cin>>e[i].fname;
cout<<"Enter student's last name: "; cin>>e[i].lname;
cout<<"Enter major: "; cin>>e[i].major;
cout<<"Enter gpa: "; cin>>e[i].gpa;
}
//ELSE}
//UPDATE// Course functions
void
addcourse(){cout<<"Enter course CRN: "; cin>>c[z].CRN;
cout<<"Enter course title: "; cin>>c[z].title;
cout<<"Enter course department: "; cin>>c[z].department;
if
(cin.fail()){cout<<"Error\n"; exit(1);}
cout<<"Enter course room: "; cin>>c[z].room;
z++;
}
//addCoursevoid
displaycourse(){cout<<setiosflags(ios::left)<<setw(15)<<"CRN"<<setw(15)<<"title";
cout<<setw(15)<<"department"<<setw(15)<<"room";
cout<<endl<<endl;
cout<<setiosflags(ios::fixed|ios::showpoint|ios::left);
for
(int i=0;i<n;i++){ if(c[i].CRN!=" "){cout<<setiosflags(ios::left)<<setw(15)<<c[i].CRN<<setw(15)<<c[i].title;
cout<<setprecision(2)<<setiosflags(ios::left)<<setw(15)<<c[i].department;
cout<<setw(15)<<c[i].room;
cout<<resetiosflags(ios::left)<<endl;
}
//IF}
//FORstring departmentname;
cout<<"enter department to view courses:";
cin>>departmentname;
for
(int i=0;i<n;i++){ if(c[i].department==departmentname){cout<<setiosflags(ios::left)<<setw(15)<<c[i].CRN<<setw(15)<<c[i].title;
cout<<setprecision(2)<<setiosflags(ios::left)<<setw(15)<<c[i].department;
cout<<setw(15)<<c[i].room;
cout<<resetiosflags(ios::left)<<endl;
}
//IF}
//FOR}
//THIS FUNCTION DISPLAYS ALL coursesint
searchcrn(string crn){for
(int i=0;i<z;i++) if(crn==c[i].CRN) return i;//FORreturn
-1;}
//SEARCH BY CRN,-1 NOT FOUNDvoid
updatecourse(){string searchc;
cout<<"Enter the CRN of the course to be modified: "; cin>>searchc;
int
i=searchcrn(searchc);if
(i==-1) cout<<"COURSE NOT LISTED"<<endl;else
{cout<<endl<<"Please enter the updated information."<<endl;
cout<<"Enter course's CRN: "; cin>>c[i].CRN;
cout<<"Enter course's title: "; cin>>c[i].title;
cout<<"Enter course's department: "; cin>>c[i].department;
cout<<"Enter course's room: "; cin>>c[i].room;
}
//ELSE}
//UPDATE the coursevoid
main(){load();
char
choice='z';while
(choice!='e'&&choice!='E'){cout<<endl<<"SUNY OW Database"<<endl;
cout<<endl<<"student menu(s)"<<endl;
cout<<endl<<"course menu(c)"<<endl;
cout<<endl<<" Type e to exit"<<endl<<endl;
cin>>choice;
switch
(choice){ case's':cout<<endl<<"Student database"<<endl;
cout<<"1. Insert Student Record"<<endl;
cout<<"2. Display All Records"<<endl;
cout<<"3. Search by Last Name"<<endl;
cout<<"4. Update Record"<<endl;
cout<<endl<<" Type e to exit"<<endl<<endl;
cout<<"Enter the number of your choice:";
cin>>choice;
switch(choice){ case '1': insert(); break; case '2': display(); break; case '3': char s[100]; int index;cout<<"Enter the last name of the student you want: ";cin>>s;
index=search(s);
if(index!=-1) {cout<<"Name: "<<e[index].fname<<" "<<e[index].lname<<endl;
cout<<"Major: "<<e[index].major<<endl;
cout<<"GPA: "<<e[index].gpa<<endl;
}
//IF else cout<<"EMPLOYEE NOT FOUND"<<endl; break; case '4': update(); break; case 'e': store(); break; //EXIT default: cout<<"Invalid Choice"<<endl; break;}
//SWITCH break; case'c':cout<<endl<<"Course database"<<endl;
cout<<"1. Add Course"<<endl;
cout<<"2. Display All Couses by Department"<<endl;
cout<<"3. Search CRN"<<endl;
cout<<"4. Update Record"<<endl;
cout<<endl<<" Type e to exit"<<endl<<endl;
cout<<"Enter the number of your choice:";
cin>>choice;
switch(choice){ case '1': addcourse(); break; case '2': displaycourse();break; case '3': char crn[100]; int index;cout<<"Enter the CRN of the course you want: ";cin>>crn;
index=searchcrn(crn);
if(index!=-1) {cout<<"CRN: "<<c[index].CRN<<endl;
cout<<"title: "<<c[index].title<<endl;
cout<<"department: "<<c[index].department<<endl;
cout<<"room: "<<c[index].room<<endl;}
//IF else cout<<"COURSE NOT FOUND"<<endl; break; case '4': updatecourse(); break; case 'e': store(); break; //EXIT default: cout<<"Invalid Choice"<<endl; break;}
//SWITCH break; case 'e': store(); break; default: cout<<"Invalid Choice"<<endl; break;}
//switch}
//WHILE}
//main