//---------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <conio.h>
#include <windows.h>
#pragma hdrstop
//---------------------------------------------------------------------------
#pragma argsused
char *Rus(const char *text);
const int l_name=20, l_ses=5;
struct Student{
char name[l_name+1];
char ses[l_ses+1];
int group;
float av;
};
int compare(const void *student1, const void *student2);
void recode(char *dest, char *source);
int main(int argc, char* argv[])
{Student student;
FILE *fin=fopen("dbase.txt", "rt");
if (!fin) {puts(Rus("Невозможно открыть файл")); system("pause"); getch();
return 0;}
FILE *fout=fopen("dbase.bin", "wb");
if (!fout) {puts(Rus("Невозможно открыть файл")); system("pause"); getch();
return 0;}
char name[l_name+1];
char ses[l_ses+1];
int ses1[5], sum;
while(!feof(fin)){
sum=0;
fgets(student.name, l_name, fin);
fscanf(fin, "%i%s", &student.group, &student.ses);
int code;
for(int i=0; i<5; i++){
code=(int)student.ses[i];
switch(code){
case 49: {ses1[i]=1; break;}
case 50: {ses1[i]=2; break;}
case 51: {ses1[i]=3; break;}
case 52: {ses1[i]=4; break;}
case 53: {ses1[i]=5; break;}
}
sum+=ses1[i];}
student.av=(float)sum/5;
recode(name, student.name);
recode(ses, student.ses);
printf("%s %i %s %.2f", name, student.group, ses, student.av);
fwrite(&student, sizeof(Student), 1, fout);
}
puts("");
fclose(fin);
puts(Rus("Бинарный файл записан"));
fseek(fout, 0, SEEK_END);
int n_record=ftell(fout)/sizeof(Student);
fclose(fout);
FILE *fbin=fopen("dbase.bin", "rb");
if (!fbin) {puts(Rus("Невозможно открыть файл для чтения")); system("pause");
getch(); return 0;}
Student *STUDENT=new Student[n_record];
fseek(fbin, 0, SEEK_SET);
fread(STUDENT, sizeof(Student), n_record, fbin);
fclose(fbin);
int i;
puts(Rus("Упорядоченный по возрастанию среднего бала массив"));
qsort(STUDENT, n_record, sizeof(Student), compare);
for(i=0; i<n_record; i++){
recode(name, STUDENT[i].name);
recode(ses, STUDENT[i].ses);
printf("%s %i %s %.2f", name, STUDENT[i].group, ses, STUDENT[i].av);}
int j=0; puts(Rus("Поиск ударников:"));
bool not_found=true;
for (i=0; i<n_record; i++){
int k=1;
for(j=0; j<l_ses; j++)
if (STUDENT[i].ses[j]=='2' || STUDENT[i].ses[j]=='3') k=0;
if(k!=0){recode(name, STUDENT[i].name); not_found=false;
printf("%s %i", name, STUDENT[i].group);}
}
if(not_found) puts(Rus("Ударников нет"));
system("pause");
getch();
return 0;
}
//---------------------------------------------------------------------------
char bufRus[256];
char *Rus(const char *text){
CharToOem(text, bufRus);
return bufRus; }
//---------------------------------------------------------------------------
int compare(const void *student1, const void *student2){
int p;
if ( ((Student *) student1)->av < ((Student *) student2)->av) p=-1;
else if ( ((Student *) student1)->av==((Student *) student2)->av) p=0;
else p=1;
return p; }
//---------------------------------------------------------------------------
void recode(char *dest, char *source){
strcpy(dest, source);
CharToOem(dest, dest);
}