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

#define STORE_MODE 1
#define CHECK_MODE 0

#define BUF_NOTES 500
#define BUF_TOPIC 30
#define BUF_SUBJECT 4
#define BUF_KEY 10

#define L1 0
#define L2 1

#define STR 0
#define INT 1

enum subjects { ALOG, VLSI, EDC, CTRL, EMT, SIG, COMM, NET };

typedef struct {
    int mode ;
    int level;
    char subject[BUF_SUBJECT], topic[BUF_TOPIC], notes[BUF_NOTES], key[BUF_KEY];
} operation;

int main(int argc, const char *argv[])
{

    operation *temp_op=NULL;
    temp_op = (operation *) malloc(sizeof(operation));
    temp_op->mode=2;
    int flag=0,i=0;
    char *temp;

    if (strcmp("st",argv[1]) == 0) {
        temp_op->mode=STORE_MODE;
        printf("\n In store mode");
    }
    else
        if(strcmp("ch",argv[1])==0) {
            temp_op->mode=CHECK_MODE;
            printf("\n In check mode");
        }
    if (temp_op->mode == 2) {
        printf("Usage: key [st|ch] <options>\nWrong switch given. Must be either st or ch");
        return 1;
    }

    if( temp_op->mode ) {
        switch (argc) {
                case 2: printf("\nEnter the subject code: ");
                    while(fgets(temp_op->subject, BUF_NOTES, stdin)==NULL);
                case 3: printf("\nEnter the topic: ");
                    while(fgets(temp_op->topic, BUF_TOPIC, stdin)==NULL);
                case 4: printf("\nEnter the Level: ");
                    flag = fscanf(stdin,"%d",&temp_op->level);
                case 5: printf("\nEnter the Answer Key: ");
                    while(fgets(temp_op->key, BUF_KEY, stdin)==NULL);
                case 6: printf("\nEnter any additional notes(optional): ");
                    while(fgets(temp_op->notes, BUF_NOTES, stdin)==NULL);
                    break;
                default:printf("\nExcess Arguments");
            }

    }
    else {
        //code for CHECK_MODE
    }

    return 0;
}