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| #include <vcl.h>
#include "stdio.h"
#include "conio.h"
#include "iostream.h"
#include "math.h"
#include "windows.h"
FILE *f, *g;
using namespace std;
struct stud {
char name[12];
char sex;
float zrist;
};
void createFile() {
if ((f = fopen("x.dat", "w")) == NULL)
{
perror("Ôàéë âæå ³ñíóº");
_getch();
exit(0);
}
else
{
cout << "Ôàéë ñòâîðåíèé";
}
_fcloseall();
}
void enterData() {
f = fopen("x.dat", "a");
while (1)
{
stud tempStruct;
cout << "Ââåä³òü ³íôîðìàö³þ ïðî ñòóäåíòà" << endl;
cout << "Ââåä³òü ³ìÿ: " << endl;
cin >> tempStruct.name;
cout << "Ââåä³òü ñòàòü ([m]ale, [f]emale): " << endl;
cin >> tempStruct.sex;
cout << "Ââåä³òü çð³ñò: " << endl;
cin >> tempStruct.zrist;
fwrite(&tempStruct, sizeof(tempStruct), 1, f);
cout << "Ïðîäîâæèòè çàïîâíåííÿ?" << endl;
bool continueEnter;
cin >> continueEnter;
if (!continueEnter) break;
}
fclose(f);
}
void showData() {
if ((f = fopen("x.dat", "r")) == NULL)
{
perror("Ôàéë âæå ³ñíóº");
_getch();
exit(1);
}
stud tempStruct;
while (fread(&tempStruct, sizeof(tempStruct), 1, f) != NULL)
{
cout << "²íôîðìàö³ÿ ïðî ñòóäåíòà: \n";
cout << "²ìÿ " << tempStruct.name << endl;
cout << "Ñòàòü: " << tempStruct.sex << endl;
cout << "Çð³ñò: " << tempStruct.zrist << endl << endl;
}
fclose(f);
}
void search4Data() {
if ((f = fopen("x.dat", "r")) == NULL)
{
perror("Ôàéë âæå ³ñíóº");
_getch();
exit(1);
}
stud tempStruct;
int maleCount = 0;
float zristSumm = 0;
char[12] femaleName;
float maxFemaleZrist = -1;
while (fread(&tempStruct, sizeof(tempStruct), 1, f) != NULL)
{
if(tempStruct.sex == 'm') {
maleCount++;
zristSumm += tempStruct.zrist;
}
else {
if(tempStruct.zrist > maxFemaleZrist) {
maxFemaleZrist = tempStruct.zrist;
femaleName = tempStruct.name;
}
}
}
fclose(f);
}
void editData() {
f = fopen("x.dat", "r");
g = fopen("temp.dat", "w");
stud tempStruct;
while (fread(&tempStruct, sizeof(tempStruct), 1, f) != NULL)
{
cout << "Âèëó÷èòè ³íôîðìàö³þ ïðî ñòóäåíòà ç ïð³çâèùåì:" << tempStruct.name<<"?";
bool ifdel;
cin >> ifdel;
if (!ifdel) {
fwrite(&tempStruct, sizeof(tempStruct), 1, g);
}
else cout << " äàí³ âèëó÷åí³."<<endl;
}
fclose(f);
fclose(g);
rename("x.dat", "tmp");
rename("temp.dat", "x.dat");
}
int _tmain(int argc, _TCHAR* argv[])
{
SetConsoleCP(1251);
SetConsoleOutputCP(1251);
while (1) {
cout << endl << "Îáåð³òü ä³þ àáî ââåä³òü 0 äëÿ âèõîäó:" << endl;
cout << "1) Ñòâîðåííÿ ôàéëó" << endl;
cout << "2) Äîïîâíåííÿ ôàéëó" << endl;
cout << "3) Ïåðåãëÿä ôàéëó" << endl;
cout << "4) Âèëó÷åííÿ äàíèõ" << endl;
cout << "5) Ïîøóê äàíèõ"<<endl;
int action;
cin >> action;
switch (action)
{
case 1: createFile(); break;
case 2: enterData(); break;
case 3: showData(); break;
case 4: editData(); break;
case 5: search4Data(); break;
default: exit(0);
}
cout << endl;
}
} |
(
Сообщение от gracia45
