#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<string.h>
#define FFLUSH while(getchar() !='\n')

typedef struct student_info{
    char id[10];
    char name[10];
    int year;
    char sex[10];
    struct student_info* link;
}INFO;

INFO* first;
INFO* current;

void createInfo(INFO* data){
    printf("Add Student-Info\n");
    printf("%-10s: ","Input ID");
    gets(data->id);
    printf("%-10s: ","Input Name");
    gets(data->name);
    printf("%-10s: ","Input Year");
    scanf("%d",&data->year);
    FFLUSH;
    printf("%-10s: ","Input Sex");
    gets(data->sex);
}

void print(){
    printf("%-10s: %s\n%-10s: %s\n%-10s: %d\n%-10s: %s\n\n",
            "ID",current->id,"Name",current->name,"Year",current->year,
            "Sex",current->sex);
}

void isSearch(int choice,INFO item){
    current = first;
    printf("\nInfo\n");
    switch(choice)
    {
        case 1: while(current != NULL){
            if(!strcmp(current->id,item.id))
            {
                print();
                current = current->link;
            }
            else
                current = current->link;
        }break;
        case 2: while(current != NULL){
            if(!strcmp(current->name,item.name))
            {
                print();
                current = current->link;
            }
            else
                current = current->link;
        }break;
        case 3: while(current != NULL){
            if(current->year==item.year)
            {
                print();
                current = current->link;
            }
            else
                current = current->link;
        }break;
        case 4: while(current != NULL){
            if(!strcmp(current->sex,item.sex))
            {
                print();
                current = current->link;
            }
            else
                current = current->link;
        }break;
    }
}

void setSearch(){
    INFO item;
    int choice;
    printf("\nSearch\n1.ID\n2.Name\n3.Year\n4.Sex\nInput Number: ");
    scanf("%d",&choice);
    FFLUSH;
    switch(choice)
    {
        case 1: printf("%-10s: ","Input ID");gets(item.id);break;
        case 2: printf("%-10s: ","Input Name");gets(item.name);break;
        case 3: printf("%-10s: ","Input Year");scanf("%d",&item.year);FFLUSH;break;
        case 4: printf("%-20s: ","Input Sex: male or female");gets(item.sex);break;
    }
    isSearch(choice,item);
}


int main(){
    int i=0,n=3;
    INFO* newinfo;
    while(i<n){
        newinfo = new(INFO);
        createInfo(newinfo);
        if(first == NULL)
        {
            newinfo->link = first;
            first = newinfo;
            current = first;
        }
        else
        {
            newinfo->link = current->link;
            current->link = newinfo;
        }
        i++;
    }
    setSearch();
    setSearch();
    setSearch();
    setSearch();

}