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| #include <iostream>
#include <fstream>
#include <string>
using namespace std;
struct Student{
char Name_Stu [20];
char Surname_Stu [20];
char Code_Stu [10];
char Groupe_Stu[10];
};
void serch_Student();
void see_Student();
void add_Student();
void Remove();
void Sort();
int r;
int main()
{ setlocale(LC_ALL, "Russian");
{
system ("Pause");
add_Student();
see_Student();
serch_Student();
add_Student();
Remove();
Sort();
}
system ("Pause");
return 0;
}
void add_Student()
{cout<<" Ведите количество студентов: ";
int r;
cin>>r;
Student * Students= new Student[r];
memset(Students,0,sizeof(Student)*r);
for(int i=0; i<r; i++)
{cout<<"---------Студент под номером----------["<<i+1<<"] "<<endl;
cout<<"\t1.Имя: ";
cin>>Students[i].Name_Stu;
cout<<"\t2.Фамилия: ";
cin>>Students[i].Surname_Stu;
cout<<"\t3.Код: ";
cin>>Students[i].Code_Stu;
cout<<"\t4.Група: ";
cin>>Students[i].Groupe_Stu;
}
ofstream fo("Students.txt", ios::app|ios::binary);
if(!fo)
fo.open("Students.txt", ios::out|ios::binary);
for(int i=0; i<r; i++)
fo.write((char*)&Students[i], sizeof(Student));
cout<<"Инфармация балы записана (Students.txt)\n\n";
fo.close();
delete [] Students;
system("Pause");
}
void see_Student()
{
ifstream fi("Students.txt", ios::binary);
if(!fi) cout<<"Error with file\n";
else {fi. seekg(0,ios::end);
int size=fi.tellg();
size=size/sizeof(Student);
Student * Students_1= new Student[size];
fi.seekg(0, ios::beg);
fi.read ((char*)Students_1,sizeof(Student)*size);
for(int i=0; i<size; i++)
cout<<"\n\tИмя студента: "<<Students_1[i].Name_Stu<<"\n\tФамилия студента: "<<Students_1[i].Surname_Stu<<"\n\tКод: "<<Students_1[i].Code_Stu<<"\n\tГрупа: "<<Students_1[i].Groupe_Stu<<"\n";
delete [] Students_1;
system("Pause");
}}
void serch_Student()
{
ifstream fi("Students.txt", ios::binary);
if(!fi) cout<<"Error with file\n";
else {fi. seekg(0,ios::end);
int size=fi.tellg();
size=size/sizeof(Student);
Student * Student_1= new Student[size];
fi.seekg(0, ios::beg);
fi.read ((char*)Student_1,sizeof(Student)*size);
Student findStudent;
cout<<"---------Name_Student----------"<<endl;
cout<<"\t1.Имя студента: ";
cin>>findStudent.Name_Stu;
for(int i=0; i < size; i++)
{
if(!strncmp(Student_1[i].Name_Stu, findStudent.Name_Stu,sizeof(findStudent.Name_Stu)/sizeof(char)))
{
cout<<"\t| Имя студента:"<<Student_1[i].Name_Stu<<;
cout<<"\t| Фамилия студента:"<<Student_1[i].Surname_Stu;
cout<<"\t| Код:"<<Student_1[i].Code_Stu;
cout<<"\t| Група:"<<Student_1[i].Groupe_Stu;
}}}
system("pause");
}
void Remove(){
int del;
cout << "Enter the number(remove)\n";
cin>>del;
ifstream fi("Students.txt", ios::binary);
if(!fi)
cout<<"Error with file\n";
else
{
fi. seekg(0,ios::end);
int size=fi.tellg();
size=size/sizeof(Student);
Student * Students_1= new Student[size];
fi.seekg(0, ios::beg);
fi.read ((char*)Students_1,sizeof(Student)*size);
fi.close();
ofstream fo("Students.txt", ios::binary);
for(int i = 0; i < size; i++)
{
if(i != del)
fo.write((char*)&Students_1[i], sizeof(Student));
}
cout<<"All information has been written in file Students.txt\n\n";
fo.close();
}
}
void Sort(struct Student Name_Stu[], int left, int right)
{
int i, j;
char *Student_2;
struct Student temp;
i = left; j = right;
Student_2 = Name_Stu[(left+right)/2].NW;
do {
while((strcmp(Name_Stu[i].NW,Student_2) < 0) && (i < right)) i++;
while((strcmp(Name_Stu[j].NW,Student_2) > 0) && (j > left)) j--;
if(i <= j) {
temp = Name_Stu[i];
Name_Stu[i] = Name_Stu[j];
Name_Stu[j] = temp;
i++; j--;
}
} while(i <= j);
if(left < j) Sort(Name_Stu, left, j);
if(i < right) Sort(Name_Stu, i, right);
} |
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