728x90 AdSpace

বুধবার, ১৯ আগস্ট, ২০১৫

Student Information System Using Link List in C Language

 #include <stdio.h>
struct node
{
    char name[10];
    int id;
    float point ;
    int age;
    char dept[5];
    struct node*s;
};
typedef struct node NODE;
NODE*H=NULL;
NODE*N1=NULL;
NODE*N2=NULL;
NODE*N3=NULL;
NODE*N4=NULL;
NODE*N5=NULL;
NODE*N6=NULL;
NODE*N7=NULL;
NODE*N8=NULL;
NODE*N9=NULL;
NODE*N10=NULL;
NODE *prev = NULL;

void create_nodes()
{
    N1 = (NODE*)malloc(sizeof(NODE));
    N2 = (NODE*)malloc(sizeof(NODE));
    N3 = (NODE*)malloc(sizeof(NODE));
     N4 = (NODE*)malloc(sizeof(NODE));
      N5 = (NODE*)malloc(sizeof(NODE));
       N6 = (NODE*)malloc(sizeof(NODE));
        N7 = (NODE*)malloc(sizeof(NODE));
         N8 = (NODE*)malloc(sizeof(NODE));
         N9 = (NODE*)malloc(sizeof(NODE));
          N10 = (NODE*)malloc(sizeof(NODE));

          strcpy(N1->name,"Raju");N1->id=14315173;N1->point=3.63;N1->age=19;strcpy(N1->dept,"CSE");
          strcpy(N2->name,"Roni");N2->id=14315174;N2->point=2.63;N2->age=19;strcpy(N2->dept,"EEE");
          strcpy(N3->name,"Rabbi");N3->id=14315175;N3->point=3.03;N3->age=20;strcpy(N3->dept,"CSE");
          strcpy(N4->name,"Rifat");N4->id=14315176;N4->point=3.83;N4->age=22;strcpy(N4->dept,"CSE");
          strcpy(N5->name,"Rajon");N5->id=14315177;N5->point=3.23;N5->age=19;strcpy(N5->dept,"CSE");
          strcpy(N6->name,"Rubi");N6->id=14315178;N6->point=2.83;N6->age=24;strcpy(N6->dept,"CSE");
          strcpy(N7->name,"Ruma");N7->id=14315179;N7->point=3.93;N7->age=19;strcpy(N7->dept,"CSE");
          strcpy(N8->name,"Ronju");N8->id=14315180;N8->point=4.00;N8->age=19;strcpy(N8->dept,"CSE");
          strcpy(N9->name,"Rubel");N9->id=14315181;N9->point=3.63;N9->age=19;strcpy(N9->dept,"CSE");
          strcpy(N10->name,"Rumpa");N10->id=14315182;N10->point=3.63;N10->age=19;strcpy(N10->dept,"CSE");


    H = N1;
    N1->s = N2;
    N2->s = N3;
    N3->s=N4;
    N4->s=N5;
    N5->s=N6;
    N6->s=N7;
    N7->s=N8;
    N8->s=N9;
    N9->s=N10;
    N10->s = NULL;

}
 NODE*searchItem()
{
   NODE*ptr = H;
int item;
printf("Enter the ID number:");
   scanf("%d",&item);
    while(ptr != NULL){
        if(item == ptr->id){
            printf("\nID FOUND\n");
            printf("Name:%s\nID:%d\nCGPA:%.2f\nAge:%d\nDept:%s\n",ptr->name, ptr->id, ptr->point,ptr->age,ptr->dept);
            return ptr;
            break;
        }else{
              prev = ptr;
              ptr = ptr->s;
        }
    }

    if(ptr==NULL)printf("\nID not found\n");
    return NULL;

}
 NODE*search()
{
  NODE*ptr = H;
int item;
printf("\nEnter the ID number:");
   scanf("%d",&item);
    while(ptr != NULL){
        if(item == ptr->id){
            printf("\nID FOUND\n");
            return ptr;
            break;
        }else{
              prev = ptr;
              ptr = ptr->s;
        }
    }

    if(ptr==NULL)printf("\nID not found\n");
    return NULL;

}
void deleteNode()
{ displayNodes();
    NODE*ptr = NULL;
  ptr = search();

  if (ptr == NULL){
    printf("\n\nNothing to delete.\n\n");
  } else {
      if(prev == NULL){
        H = ptr->s;
        printf("Deletion completed\n");
      }else {
         prev->s = ptr->s;
         printf("Deletion completed\n");
      }
  }

}
void displayNodes(){
    NODE*ptr = H;int a=1;
    printf("SL\tNAME\tID\t\tCGPA\tAGE\tDEPT\n");
    while(ptr != NULL){
        printf("%d:\t%s\t%d\t%.2f\t%d\t%s\n",a, ptr->name, ptr->id, ptr->point,ptr->age,ptr->dept);
        ptr = ptr->s;
        a++;
    }
}
void randInsertion(){
    int a=0,b;
    displayNodes();
    printf("\nEnter the position:");
    scanf("%d",&b);
   if(b==1){insert_f();}
   else
    {
        rand(b);

   }

}
void rand(int d){
    char nam[10];
    int i;
    float poi;
    int ag;
    char dep[5];
    int a=0;NODE*ptr=H;
    for(a=0;a<d-2;a++)
        {ptr=ptr->s;}
 NODE *N= NULL;
 printf("Enter name: ");
 scanf("%s",nam);
 printf("Enter ID:");
 scanf("%d",&i);
 printf("Enter CGPA: ");
 scanf("%f",&poi);
 printf("Enter Age: ");
 scanf("%d",&ag);
 printf("Enter Dept:");
 scanf("%s",dep);
 N = (NODE*)malloc(sizeof(NODE));
 strcpy(N->name,nam); N->id=i;N->point=poi;N->age=ag;strcpy(N->dept,dep);
 N->s=ptr->s;
 ptr->s=N;
  printf("\nSuccessful Inserted\n");

}
void insert_f()
{
    char nam[10];
    int i;
    float poi;
    int ag;
    char dep[5];
 NODE*N= NULL;
 printf("Enter name: ");
 scanf("%s",nam);
 printf("Enter ID:");
 scanf("%d",&i);
 printf("Enter CGPA: ");
 scanf("%f",&poi);
 printf("Enter Age: ");
 scanf("%d",&ag);
 printf("Enter Dept:");
 scanf("%s",dep);
 N = (NODE*)malloc(sizeof(NODE));
 strcpy(N->name,nam); N->id=i;N->point=poi;N->age=ag;strcpy(N->dept,dep);
    N->s=H;
    H=N;


    printf("\nSuccessful Inserted\n");

}



int menu1()
{
    int j;
    printf("\nPress 1 for Insertion >> ");
    printf("\nPress 2 for Display >> ");
    printf("\nPress 3 for Delete >> ");
    printf("\nPress 4 for Searching >> ");
    printf("\nPress 5 for Updated>> ");
    printf("\nPress 0 for exit >> \n");
    scanf("%d",&j);
   //getch(j);
    return j;
system("cls");

}
int updated()
{
    char nam[10];
    int i;
    float poi;
    int ag;
    char dep[10];
  displayNodes();
    NODE*ptr = NULL;
  ptr = search();
 NODE *N= NULL;
 printf("Enter Name: ");
 scanf("%s",nam);
 printf("Enter ID:");
 scanf("%d",&i);
 printf("Enter CGPA: ");
 scanf("%f",&poi);
 printf("Enter Age: ");
 scanf("%d",&ag);
 printf("Enter Dept:");
 scanf("%s",dep);
 N = (NODE*)malloc(sizeof(NODE));
 strcpy(N->name,nam); N->id=i;N->point=poi;N->age=ag;strcpy(N->dept,dep);
 N->s=ptr->s;
 ptr->s=N;

      if(prev == NULL){

            H = ptr->s;
      }else {


         prev->s = ptr->s;
      }

   printf("\nSuccessful Updated \n");
}
int main()
{

  system("color 3b");
    int a;

    create_nodes();

printf("*************////// DIU SIUDENT INFORMATION \\\\\\\\****************\n");
a=menu1();
create_nodes();
system("cls");
    while (a!=0)
    {

        switch (a)
        {


            case 1:randInsertion();break;
            case 2:displayNodes();break;
            case 3: deleteNode();break;
            case 4: searchItem();break;
            case 5:updated();break;
            default : printf("Invalid input");
        }
        printf("\n\nEnter any key to continue ");
        getch();
         a=menu1();
        system("cls");



    }

}

  • Blogger Comments
  • Facebook Comments

0 মন্তব্য(গুলি):

একটি মন্তব্য পোস্ট করুন

Item Reviewed: Student Information System Using Link List in C Language Rating: 5 Reviewed By: Unknown