lab9

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

#define N 10

struct Student {
    char name [20];
    char surname [40];
    char sexist [10];
    int age;
};

void SearchByName (struct Student* st, int size, const char* Name);
void SearchByAge (struct Student* st, int size, int age);

int main()
{
    FILE* f;
    int request, i;
    struct Student student[N];

    if ((f = fopen("student1.txt", "r")) == NULL)
    {
        printf("Error while opening student.txt/n");
        return 1;
    }

    for(i = 0; i < N; ++i)
    {
        fgets(student[i].name, 20, f);
        fgets(student[i].surname, 40, f);
        fgets(student[i].sexist, 10, f);
        fscanf(f, "%d", &student[i].age);

    }
    fclose(f);

    while (request != 5)
    {
        printf("\nenter request:\n1-seach Elena\n 2-seach age\n");
        scanf("%d", &request);
        switch(request)
        {
        case 1:
            SearchByName(student, N, "Elena");
            break;
        case 2:
            SearchByAge(student, N, 19);
            break;
        case 3:
            return 0;
        default:
            printf("\nError");
        }
    }
    getchar();
}

void SearchByName(Student* arr, int size, const char* name)
{
    int i, count = 0;
    for (i = 0; i < size; ++i)
    {
        if (!strcmp(arr[i].name, name))
        {
            printf("\n%s\t%s\t%s\t%d", arr[i].name
                                     , arr[i].surname
                                     , arr[i].sexist
                                     , arr[i].age);
        }
    }
}

void SearchByAge(Student* arr, int size, int age)
{
    int i, count = 0;
    for (i = 0; i < size; ++i)
    {
        if (arr[i].age == age)
        {
            printf("\n%s\t%s\t%s\t%d", arr[i].name
                                     , arr[i].surname
                                     , arr[i].sexist
                                     , arr[i].age);
        }
    }
}