Dictionary

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

struct node{
    char word[100];
    char meaning[100];
    char example[1000];
    struct node *next;
    struct node *prev;
}*start=NULL;


void sort(struct node *newnode)
{
    struct node *current,*currentprev,*temp;

    current = start;

    if(start == NULL)
        start = newnode;

    else if(start->next == NULL){

        if(strcmp(newnode->word,current->word)>0){
            current->next = newnode;
            newnode -> prev = current;
        }

        else{
            newnode->next = current;
            current->prev = newnode;
            start = newnode;
        }
    }

    else{
        while(current!=NULL){
            if(strcmp(newnode->word,current->word)<0)
                break;
            if(current->next==NULL)
                temp=current;
            current = current->next;
        }

        if(current == start){
            newnode->next = current;
            current->prev = newnode;
            start = newnode;
        }

        else if(current == NULL){
            temp->next = newnode;
            newnode->prev = temp;
        }

        else{
            currentprev = current->prev;
            currentprev->next = newnode;
            newnode->prev = currentprev;
            newnode->next = current;
            current->prev = newnode;
        }
    }

}

int checker(struct node *newnode)
{
    int i=0;
    struct node *current;
    current=start;
    while(current!=NULL){
        if(strcmp(current->word,newnode->word)==0){
            i++;
            break;
        }
        current=current->next;
    }
    return i;
}

void insert()
{
    struct node *newnode,*current;
    newnode=(struct node*)malloc(sizeof(struct node));
    newnode->next=NULL;
    newnode->prev=NULL;

    printf("\t Enter word: ");
    getchar();
    scanf("%s",newnode->word);

    printf("\t Enter meaning: ");
    getchar();
    scanf("%s",newnode->meaning);

    printf("\t Give an example: ");
    getchar();
    scanf("%[^\n]",newnode->example);

    int i=checker(newnode);
    if(i==0){
        sort(newnode);
        system("CLS");
        printf("\t *save successful* \n");
        char n;
        getchar();
        printf("\t 1. save another word\n");
        printf("\t 2. view recent save word\n");
        printf("\t 0. Home\n");
        printf("\t Chose an option: ");
        scanf("%c",&n);
        if(n=='0'){
            system("CLS");
            return;
        }
        else if(n=='1'){
            system("CLS");
            insert();
        }
        else if(n=='2'){
            system("CLS");
            printf("\t\t word\t\t meaning \t example ");
            printf("\n\t------------------------------------------------------------\n");
            printf("\t\t %s",newnode->word);
            printf("\t\t %s",newnode->meaning);
            printf("\t\t %s\n\n",newnode->example);
        }
    }
    else{
        system("CLS");
        printf("\t\t word Exist, can't save it \n");
        printf("\t 1. save another word\n");
        printf("\t 0. Home\n");
        char n;
        getchar();
        printf("\t Chose an option: ");
        scanf("%c",&n);
        if(n=='0'){
            system("CLS");
            return;
        }
        else if(n=='1'){
            system("CLS");
            insert();
        }
    }
}


void del(struct node *current)
{
    if(current == start)
        start = current->next;

    else if(current->next == NULL)
        (current->prev)->next = NULL;

    else{
        struct node *currentprev, *currentnext;
        currentprev = current->prev;
        currentnext = current->next;
        currentprev->next = currentnext;
        currentnext->prev = currentprev;
    }
}

void edit(struct node *current)
{
    del(current);

    char n;

    printf("1. Change word\n");
    printf("2. Skip\n");
    printf("\nChose an option : ");
    getchar();
    scanf("%c",&n);
    system("CLS");
    if(n == '1'){
        printf("edit word : ");
        getchar();
        scanf("%s",current->word);
    }
    system("CLS");
    printf("1. Change meaning\n");
    printf("2. Skip\n");
    printf("\nChose an option : ");
    getchar();
    scanf("%c",&n);
    system("CLS");
    if(n == '1'){
        printf("edit meaning: ");
        getchar();
        scanf("%s",current->meaning);
    }
    system("CLS");
    printf("1. Change example\n");
    printf("2. Skip\n");
    printf("\nChose an option: ");
    getchar();
    scanf("%c",&n);
    system("CLS");
    if(n == '1'){
        printf("edit example: ");
        getchar();
        scanf("%[^\n]",current->example);
    }
    system("CLS");
    current->next = NULL;
    current->prev = NULL;
    sort(current);

}


void search()
{
    struct node *current;
    if(start==NULL){
        printf("\n\t\t No word saved for search \n");
        return;
    }

    char str[100];
    printf("\t Enter name for search : ");
    getchar();
    scanf("%s",str);
    current = start;

    int i=0;
    char n;

    while(current!=NULL){
        if(strcmp(current->word,str)==0){
            system("CLS");
            printf("\t word found \n");
            printf("\t\t word \t\t meaning \t\t example");
            printf("\n\t--------------------------------------------------------\n");
            printf("\t\t %s",current->word);
            printf("\t\t %s",current->meaning);
            printf("\t\t %s\n\n",current->example);
            i++;
            break;
        }

        current = current->next;
    }

    if(i==0){
        system("CLS");
        printf("\t word Not Found \n");
        return;
    }

    else{
        printf("\t 1. Delete\n");
        printf("\t 2. edit\n");
        printf("\t 0. Home\n");
        printf("\t Chose an option : ");

        getchar();
        scanf("%c",&n);

        if(n == '1'){
            system("CLS");
            del(current);
            system("CLS");
            printf("\t *Delete successful* \n");
        }
        else if(n == '2'){
            system("CLS");
            edit(current);
            system("CLS");
            printf("\t *Edit successful* \n");
        }
        else if(n == '0'){
            system("CLS");
            return;
        }
    }

}


void count()
{
    struct node *current;
    int count = 0;
    current = start;

    while(current!=NULL){
        count++;
        current = current->next;
    }
    printf("\n\t\t Total words - %d\n",count);
}


void select(int i)
{
    int j=1;
    struct node *current;
    current=start;
    while(j<i){
        current=current->next;
        j++;
    }
    printf("\n");
    printf("\t\t word\t\t meaning \t\t example");
    printf("\n\t----------------------------------------------------------\n");
    printf("\t\t %s",current->word);
    printf("\t\t %s",current->meaning);
    printf("\t\t %s\n\n",current->example);

    char n;
    getchar();
    printf("\t 1. Delete\n");
    printf("\t 2. Edit\n");
    printf("\t 0. Home\n");
    printf("\t Chose an option : ");
    scanf("%c",&n);
    if(n == '1'){
        system("CLS");
        del(current);
        system("CLS");
        printf("\t *Delete successful* \n");
    }
    else if(n=='2'){
        system("CLS");
        edit(current);
        system("CLS");
        printf("\t *Edit successful* \n");
    }
    else if(n == '0'){
        system("CLS");
        return;
    }
}


void displayall()
{
    if(start == NULL){
        printf("\n\t No word for display\n\n");
        return;
    }

    else{
        count();
        printf("\n");
        printf("\t serial \t words \t\t meanings \t example");
        printf("\n\t---------------------------------------------------------------------\n");
        struct node *current;
        current = start;
        int i=0;
        while(current!=NULL){
            i++;

            printf("\t %d",i);
            printf("\t\t %s",current->word);
            printf("\t\t %s",current->meaning);
            printf("\t\t %s\n",current->example);

            current = current->next;
        }
    }
    printf("\n");
    char n;
    getchar();
    printf("\t Select a word or press '0' to go home: ");
    scanf("%c",&n);
    int i=n-48;
    if(i==0){
        system("CLS");
        return;
    }
    else{
        system("CLS");
        select(i);
    }
    printf("\n");
}

void developer()
{
    printf("\t\t\nThis Project is Developed By\n1. Jann0at Mimee\n2. Samanta\n\n");
}

void home()
{
    char n;
    while(1){
        printf("\t ***HOME***\n");
        printf("\t 1. Save a new word\n");
        printf("\t 2. Show all words\n");
        printf("\t 3. Search a word\n");
        printf("\t 4. Developers\n");
        printf("\t 0. exit\n");
        printf("\n\t Chose an option : ");
        getchar();
        scanf("%c",&n);
        if(n=='0'){
            system("CLS");
            exit(0);
        }
        else if(n=='1'){
            system("CLS");
            insert();
        }
        else if(n=='2'){
            system("CLS");
            displayall();
        }

        else if(n=='3'){
            system("CLS");
            search();
        }
        else if(n=='4'){
            system("CLS");
            developer();
        }
        else{
            printf("\t Invalid input \n");
        }
    }
    return;
}


int main()
{
    char n;
    system("CLS");
    printf("\t***ENGLISH TO ENGLISH DICTIONARY***\n\n");
    printf("\npress '1' to continue : ");
    scanf("%c",&n);
    if(n=='1'){
        system("CLS");
        printf("\n\t WELCOME \n\n");
        home();
    }
    printf("Invalid Input\n");
    return 0;
}