Algo_Project

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


char t_name[50];
char t_mail[50];
char t_pass[50];
char t_id[50];

char st_name[50];
char st_mail[50];
char st_pass[50];
char st_id[50];

int result[100] = {0};
int st;

struct node
{
    char name[50];
    char code[20];
    struct node *next;

}*head = NULL;

void total_courses()
{
    struct node *new_node, *current;

    new_node = (struct node*)malloc(sizeof(struct node));
    new_node->next = NULL;

    strcpy(new_node->name, "Algorithm");
    strcpy(new_node->code, "CSE214");

    head = new_node;
    current = new_node;

    struct node *new_node1 = (struct node*)malloc(sizeof(struct node));
    new_node1->next = NULL;

    strcpy(new_node1->name, "Data Communication");
    strcpy(new_node1->code, "CSE212");

    current->next = new_node1;
    current = new_node1;

}

void t_course()
{


    struct node *current = head;

    printf("\nCourseList: \n\n");
    while(current != NULL)
    {

        printf("Course Name: %s\n", current->name);
        printf("Course Code: %s\n\n", current->code);


        current = current->next;
    }

    printf("\n\n");

}

void t_logIn()
{
    char m[50], p[50];

    printf("\n\n**** Log-In ****\n\n");

    printf("Enter mail: ");
    scanf(" %[^\n]", m);

    printf("\nEnter password: ");
    scanf(" %[^\n]", p);


    if( (strcmp(m, t_mail) != 0) && (strcmp(p, t_pass) != 0) )
    {

        printf("\nError Data\n");
        t_logIn();
    }
    else
    {

        printf("\n\t**** Log-In Successful ****\n\n");
    }
}

void t_signUp()
{

    printf("\nEnter name: ");
    scanf(" %[^\n]", t_name);
    printf("\nEnter mail: ");
    scanf(" %[^\n]", t_mail);
    printf("\nEnter id: ");
    scanf(" %[^\n]", t_id);
    printf("\nEnter pass: ");
    scanf(" %[^\n]", t_pass);

    printf("\n\t\t**** Sign-Up Successful ****\n");


}

void s_logIn()
{
    char m[50], p[50];

    printf("\n\n**** Log-In ****\n\n");

    printf("Enter mail: ");
    scanf(" %[^\n]", m);

    printf("\nEnter password: ");
    scanf(" %[^\n]", p);


    if( (strcmp(m, st_mail) != 0) && (strcmp(p, st_pass) != 0) )
    {

        printf("\nError Data\n");
        s_logIn();
    }
    else
    {

        printf("\n\t**** Log-In Successful ****\n\n");
    }
}

void s_signUp()
{
    printf("\nEnter name: ");
    scanf(" %[^\n]", st_name);
    printf("\nEnter mail: ");
    scanf(" %[^\n]", st_mail);
    printf("\nEnter id: ");
    scanf(" %[^\n]", st_id);
    printf("\nEnter pass: ");
    scanf(" %[^\n]", st_pass);

    printf("\n\t\t**** Sign-Up Successful ****\n");
}
void Student()
{
    int n;

    printf("\nNew to this site(1/0): ");
    scanf("%d", &n);

    if(n == 1)
    {

        s_signUp();
        s_logIn();
    }
    else
    {

        s_logIn();
    }
}

void Teacher()
{
    int n;

    printf("\nNew to this site(1/0): ");
    scanf("%d", &n);

    if(n == 1)
    {

        t_signUp();
        t_logIn();
    }
    else
    {

        t_logIn();
    }
}

void t_profile()
{
    printf("\n\t*** Profile ***\n\n");

    printf("\tName: %s\n", t_name);
    printf("\tEmail: %s\n", t_mail);
    printf("\tId   : %s\n", t_id);

    printf("\n\n");
}

void st_profile()
{
    printf("\n*** Profile ***\n\n");

    printf("Name: %s\n", st_name);
    printf("Email: %s\n", st_mail);
    printf("Id   : %s\n", st_id);

    printf("\n\n");
}


void swap(int* a, int* b)
{
    int t = *a;
    *a = *b;
    *b = t;
}

int partition (int ara[], int low, int high)
{
    int pivot = ara[high];
    int i = (low - 1);

    for (int j = low; j <= high- 1; j++)
    {

        if (ara[j] > pivot)
        {
            i++;
            swap(&ara[i], &ara[j]);
        }
    }

    swap(&ara[i + 1], &ara[high]);

    return (i + 1);
}

void quickSort(int ara[], int low, int high)
{
    if (low < high)
    {

        int pi = partition(ara, low, high);

        quickSort(ara, low, pi - 1);
        quickSort(ara, pi + 1, high);
    }
}

void s_result()
{

    printf("\nResult : \n");
    for(int i=0; i<st; i++)
    {


        printf("Roll %d: %d\n", i+1, result[i]);
    }

    printf("\n\n");
}

int main()
{
    char ch, c;
    int n, a = 0, b, d;

    printf("\n\n\t\t\t****** Welcome to our College management system ******\n\n");

    printf("\n\tChoose category: \n\n");
    printf("\t1. Teacher\n");
    printf("\t2. Student\n\n");

    scanf("%d", &n);

    if(n == 1)
    {

        Teacher();
        a = 1;
    }
    else
    {

        Student();
    }


    while(1)
    {
        if(a == 1)
        {

            printf("\n\t***** Welcome to Teacher Portal *****\n\n");
            printf("\tChose an option:\n");
            printf("\t1.Profile\n\t2.Course\n\t3.Add result\n\t4.Show Student's result\n\t5.Exit\n");

            scanf("%d", &b);

            if(b == 1)
            {

                t_profile();
            }
            else if(b == 2)
            {
                total_courses();
                t_course();
            }
            else if(b == 3)
            {

                int i;
                printf("\nEnter the number of student in class: ");
                scanf("%d", &st);

                printf("\nAdd result: \n");

                for(i=0; i<st; i++)
                {

                    printf("Roll %d: ", i+1);
                    scanf("%d", &result[i]);
                }

                quickSort(result, 0, st-1);

                FILE *fp;

                fp = fopen("result.txt", "w");

                for(i=0; i<st; i++)
                {

                    fprintf(fp, "Roll %d: %d\n",i+1, result[i]);
                }

                fclose(fp);

            }
            else if(b == 4)
            {

                s_result();
                printf("\n");
            }
            else if(b == 5)
            {

                break;
            }
        }
        else
        {


            printf("\n\t***** Welcome to Student Portal *****\n\n");
            printf("\tChose an option:\n");
            printf("\t1.Profile\n\t2.Course\n\t3.See result\n\t4.Exit\n");
            scanf("%d", &b);

            if(b == 1)
            {

                st_profile();
            }
            else if(b == 2)
            {

                total_courses();
                t_course();
            }
            else if(b == 3)
            {

                FILE *fp;

                fp = fopen("result.txt", "r");

                if(fp == NULL)
                {

                    printf("\n\nResult has not published Yet\n\n");
                }
                else
                {

                    int a;

                    while(a != EOF)
                    {

                        a = fgetc(fp);

                        putchar((char)a);
                    }

                    printf("\n\n");
                }
            }
            else if(b == 4)
            {

                break;
            }
        }
    }

    printf("\n\n\t\t********* Thank You :-) *********\n\n");

    return 0;
}