Universitymanagement.c

#include"stdio.h"
#include"conio.h"

void addstudent();
void studentrecord();
void searchstudent();
void delete();

struct student {
    char first_name[20];
    char last_name[20];
    int roll_no;
    char Class[10];
    char vill[20];
    float per;
};

void main()
{

    int choice;
    while(choice!=5) {

        printf("\t\t\t=====UNIVERSITY DATABASE MANAGEMENT SYSTEM=====");
        printf("\n\n\n\t\t\t\t     1. Add Student\n");
        printf("\t\t\t\t     2. Students Records\n");
        printf("\t\t\t\t     3. Search Student\n");
        printf("\t\t\t\t     4. Delete Student\n");
        printf("\t\t\t\t     5. Exit\n");
        printf("\t\t\t\t    _____________________\n");
        printf("\t\t\t\t     ");
        scanf("%d",&choice);

        switch(choice) {
        case 1:
            clrscr();
            addstudent();
            clrscr();
            break;
        case 2:
            clrscr();

            studentrecord();
            printf("\t\t\t\t  press any key to exit..... \n");
            getch();
            clrscr();

            break;

        case 3:
            clrscr();
            searchstudent();
            printf("\n\t\t\t\t  Press any key to exit.......\n");

            getch();
            clrscr();

            break;

        case 4:
            clrscr();
            delete();
            printf("\n\t\t\t\tPress any key to exit.......\n");
            getch();
            clrscr();
            break;
        case 5:
            clrscr();
            printf("\n\t\t\t\tThank you, for used this software.\n\n");
            exit(0);
            break;

        default :
            clrscr();
            getch();
            printf("\n\t\t\t\t\tEnter a valid number\n\n");
            printf("\t\t\t\tPress any key to continue.......");
            getch();
            clrscr();
            break;
        }

    }

    getch();
}

void addstudent() {

    char another;
    FILE *fp;
    int n,i;
    struct student info;
    do {
        clrscr();
        printf("\t\t\t\t=======Add Students Info=======\n\n\n");
        fp=fopen("information.txt","a"); //use can give any file name. Give the name with extention or without extention.

        printf("\n\t\t\tEnter First Name     : ");
        scanf("%s",&info.first_name);
        printf("\n\t\t\tEnter Last Name     : ");
        scanf("%s",&info.last_name);
        printf("\n\t\t\tEnter ID-No       : ");
        scanf("%d",&info.roll_no);
        printf("\n\t\t\tEnter Class(course) : ");
        scanf("%s",&info.Class);
        printf("\n\t\t\tEnter Address       : ");
        scanf("%s",&info.vill);
        printf("\n\t\t\tEnter Percentage    : ");
        scanf("%f",&info.per);
        printf("\n\t\t\t______________________________\n");

        if(fp==NULL) {
            fprintf(stderr,"can't open file");
        } else {
            printf("\t\t\tRecord stored successfuly\n");
        }

        fwrite(&info, sizeof(struct student), 1, fp);
        fclose(fp);

        printf("\t\t\tYou want to add another record?(y/n) : ");


        scanf("%s",&another);


    } while(another=='y'||another=='Y');
}

void studentrecord() {

    FILE *fp;

    struct student info;
    fp=fopen("information.txt","r");

    printf("\t\t\t\t=======STUDENTS RECORD=======\n\n\n");

    if(fp==NULL) {

        fprintf(stderr,"can't open file\n");
        exit(0);
    } else {
        printf("\t\t\t\tRECORDS :\n");
        printf("\t\t\t\t___________\n\n");
    }

    while(fread(&info,sizeof(struct student),1,fp)) {
        printf("\n\t\t\t\t Student Name  : %s %s",info.first_name,info.last_name);
        printf("\n\t\t\t\t Roll NO       : %d",info.roll_no);
        printf("\n\t\t\t\t Class         : %s",info.Class);
        printf("\n\t\t\t\t Village/City  : %s",info.vill);
        printf("\n\t\t\t\t Percentage    : %f%",info.per);
        printf("\n\t\t\t\t ________________________________\n");

    }
    fclose(fp);
    getch();

}

void searchstudent() {
    struct student info;
    FILE *fp;
    int roll_no,found=0;

    fp=fopen("information.txt","r");
    printf("\t\t\t\t=======SEARCH STUDENTS RECORD=======\n\n\n");
    printf("\t\t\tEnter the ID_No : ");

    scanf("%d",&roll_no);



    while(fread(&info,sizeof(struct student),1,fp)>0) {

        if(info.roll_no==roll_no) {

            found=1;
            printf("\n\n\t\t\tStudent Name : %s %s",info.first_name,info.last_name);
            printf("\n\t\t\tRoll NO        : %d",info.roll_no);
            printf("\n\t\t\tClass          : %s",info.Class);
            printf("\n\t\t\tAddress        : %s",info.vill);
            printf("\n\t\t\tPercentage     : %f%",info.per);
            printf("\n\t\t\t______________________________________\n");

        }

    }

    if(!found) {
        printf("\n\t\t\tRecord not found\n");
    }

    fclose(fp);
    getch();

}


void delete() {
    struct student info;
    FILE *fp, *fp1;


    int roll_no,found=0;

    printf("\t\t\t\t=======DELETE STUDENTS RECORD=======\n\n\n");
    fp=fopen("information.txt","r");
    fp1=fopen("temp.txt","w");
    printf("\t\t\t\tEnter the roll no : ");
    scanf("%d",&roll_no);
    if(fp==NULL) {
        fprintf(stderr,"can't open file\n");
        exit(0);
    }

    while(fread(&info,sizeof(struct student),1,fp)) {
        if(info.roll_no == roll_no) {

            found=1;

        } else {
            fwrite(&info,sizeof(struct student),1,fp1);
        }

    }
    fclose(fp);
    fclose(fp1);

    if(!found) {
        printf("\n\t\t\t\tRecord not found\n");
    }
    if(found) {
        remove("information.txt");
        rename("temp.txt","information.txt");

        printf("\n\t\t\t\tRecord deleted succesfully\n");
    }
    printf("how are you")

    getch();
}