1st Code

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

#define numbOfList 4
#define numbOfChars 50


struct symbolInfo{
    char name[numbOfChars];
    char classType[numbOfChars];
    struct symbolInfo *next;
}*symbolTable[numbOfList];


void displayAll(){

    printf("Displaying the list :- \n");
    struct symbolInfo *isNull;

    int i;
    for(i=0; i<numbOfList;i++){
        isNull=symbolTable[i];

        printf("\n%d No. list :  ", i+1);
        while(isNull!=NULL){
            printf("<%s,%s>  ",isNull->name, isNull->classType);
            isNull=isNull->next;
        }
    }

    printf("\n");
}


void insert(char setName[numbOfChars], char setClassType[numbOfChars], int hashKey){
    struct symbolInfo *isNull;
    struct symbolInfo *temp;
    isNull = symbolTable[hashKey];
    temp = malloc(sizeof(struct symbolInfo));
    temp -> next = NULL;
    strcpy(temp->name, setName);
    strcpy(temp->classType, setClassType);
    symbolTable[hashKey] = temp;
    symbolTable[hashKey] ->next = isNull;       //assume, symbolTable[hashKey] == head
}


int searchInList(char getName[numbOfChars], char getClassType[numbOfChars]){
    int isFound = 0;                            //Not found
    int listNumber = getHashKey(getName);

    struct symbolInfo *isNull;
    isNull = symbolTable[listNumber];

    while(isNull!=NULL){
        if((strcmp(isNull->name,getName) == 0) && (strcmp(isNull->classType,getClassType) == 0)){
            isFound = 1;
            break;
        }
        isNull=isNull->next;
    }

    return isFound;

}


void deleteFromList(char getName[numbOfChars], char getClassType[numbOfChars]){
    struct symbolInfo *isNull;
    struct symbolInfo *prev;

    int listNumber = getHashKey(getName);
    isNull = symbolTable[listNumber];

    if((strcmp(symbolTable[listNumber]->name,getName) == 0)&& (strcmp(symbolTable[listNumber]->classType,getClassType)== 0)){
        symbolTable[listNumber] = isNull->next;
    }
    else{
        while(isNull!=NULL){
            if((strcmp(isNull->name,getName) == 0) && (strcmp(isNull->classType,getClassType) == 0)){
                prev->next=isNull->next;
                break;
            }
            prev=isNull;
            isNull=isNull->next;
        }
    }
}


void UpdateList(char getName[numbOfChars], char getClassType[numbOfChars], char updatedClassType[numbOfChars]){
    int listNumber = getHashKey(getName);

    struct symbolInfo *isNull;
    isNull = symbolTable[listNumber];

    while(isNull!=NULL){
        if((strcmp(isNull->name,getName) == 0) && (strcmp(isNull->classType,getClassType) == 0)){
            strcpy(isNull->classType, updatedClassType);
            break;
        }
        isNull=isNull->next;
    }
}


int getHashKey(char value[numbOfChars]){
    int total = 0;
    int i;

    for(i=0; i<strlen(value); i++){
        total = total + value[i];
    }

    return total%numbOfList;
}


void menu(){

    int choice;

    while(1){
        printf("-------Menu------\n");
        printf("1.  Insert\n");
        printf("2.  Search\n");
        printf("3.  Delete\n");
        printf("4.  Update\n");
        printf("5.  Show lists\n");
        printf("6.  Exit\n");
        printf("-----------------\n\n");

        printf("Enter choice: ");
        scanf("%d", &choice);
        printf("\n");

        if(choice == 6){
            break;
        }
        else if (choice == 1){

            printf("Keep inserting. Enter 0 in both cases to stop\n\n");

            while(1){
                char setName[numbOfChars];
                char setClassType[numbOfChars];
                int hashKey;

                printf("Enter the name : ");
                scanf("%s", setName);
                printf("Enter class type : ");
                scanf("%s", setClassType);
                printf("\n");

                if((strcmp(setName, "0") == 0) && (strcmp(setClassType, "0") == 0)){
                    break;
                }

                hashKey = getHashKey(setName);
                insert(setName, setClassType, hashKey);
            }
        }
        else if (choice == 2){

            char getName[numbOfChars];
            char getClassType[numbOfChars];

            printf("Enter the name for searching: ");
            scanf("%s", getName);
            printf("Enter class type for searching: ");
            scanf("%s", getClassType);
            printf("\n");

            int isFound = searchInList(getName, getClassType);
            printf("Search Result : %d", isFound);
        }
        else if (choice == 3){

            char getName[numbOfChars];
            char getClassType[numbOfChars];

            printf("Enter the name for deleting: ");
            scanf("%s", getName);
            printf("Enter class type for deleting: ");
            scanf("%s", getClassType);
            printf("\n");

            deleteFromList(getName, getClassType);
        }
        else if (choice == 4){

            char getName[numbOfChars];
            char getClassType[numbOfChars];
            char updateClassType[numbOfChars];

            printf("Enter the name for searching: ");
            scanf("%s", getName);
            printf("Enter class type for searching: ");
            scanf("%s", getClassType);
            printf("Enter class type for Update: ");
            scanf("%s", updateClassType);
            printf("\n");

            UpdateList(getName, getClassType, updateClassType);
        }
        else if (choice == 5){

            displayAll();
        }

        printf("\n\n");
    }
}


int main(){

    menu();

    printf("\n\n\n");
    return 0;
}