Thread: Linked List problem..

Dear guys,

I'm facing some problem about the Name is not displaying as I expected..

Code:

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


int selection = 0; //Always return 0 after a function is executed


struct productInfo
{
    int categoryID;
    char categoryName[50];
    int productID;
    char productName[50];
    float productPrice;
    int productUnit;
    struct productInfo *nextPtr;
};


struct productInfo get;
struct productInfo *tempStorage;
struct productInfo *previousPtr = NULL;


void mainMenu (void);
void addItem (void);
void deleteItem (void);
void updateItem (void);
void sortItem (void);
void display (void);


/*In this problem, you will need to create an inventory system
that enable user to add, delete,
update product category (example: id, name)
product info (example: id, name, price, inventory level etc).*/


int main()
{
    do
    {
    mainMenu(); //Pick an option
    } while (selection == 0);
}


void mainMenu (void)
{
    printf("~*~*~*~Welcome to the main menu~*~*~*~\n"
    " 1 to add a category or item\n"
    " 2 to update a category or item\n"
    " 3 to delete an category or item\n"
    " 4 to end\n"
    "?");
    scanf("%d", &selection);


    switch(selection)
    {
        case 1:
            addItem();
            //sortItem();
            //system("CLS");
            display();
            break;
        case 2:
            deleteItem();
            break;
        case 3:
            updateItem();
            break;
        default:
            printf("Re-enter");
            selection = 0;
    }
}


void addItem (void)
{
    int tempCategoryID = 0;
    int tempProductID = 0;


    char tempCategoryName[50];
    char tempProductName[50];


    float tempProductPrice = 0.00;
    int tempProductUnit = 0;
    
    int decision = 0;
    
    fflush(stdin); //make sure all the buffered output is flushed
    printf("Please key in the Category ID :\n");
    scanf("%d", &tempCategoryID);
    
    fflush(stdin);
    printf("Please key in the Category Name :\n");
    scanf("%[^\n]", tempCategoryName);
    
    fflush(stdin);
    printf("Key in 1 if you have a product to store.\nKey in others number to skip.\n");
    scanf("%d", &decision);
    
    if (decision == 1) {
        fflush(stdin);
        printf("Please key in the Product ID :\n");
        scanf("&d", &tempProductID);
        
        fflush(stdin);
        printf("Please key in the Product Name :\n");
        scanf("%[^\n]", tempProductName);
        
        fflush(stdin);
        printf("Please key in the Product Price :\nRM");
        scanf("%f", &tempProductPrice);
        
        fflush(stdin);
        printf("Please key in the Product Unit :\n");
        scanf("%d", &tempProductUnit);
    } else {
        tempProductID = tempCategoryID*100;
        tempProductName[0] = '\0';
        tempProductPrice = 0.00;
        tempProductUnit = 0;
    }


    tempStorage = malloc(sizeof(struct productInfo));


    tempStorage -> categoryID = tempCategoryID;
    tempStorage -> categoryName[50] = tempCategoryName[50];
    tempStorage -> productID = tempProductID;
    tempStorage -> productName[50] = tempProductName[50];
    tempStorage -> productPrice = tempProductPrice;
    tempStorage -> productUnit = tempProductUnit;
    tempStorage -> nextPtr = previousPtr;
    previousPtr = tempStorage;
}


void display (void)
{
	struct productInfo *displayItem;
	displayItem = previousPtr;
	char checkName[50] = "";


	while (displayItem != NULL)
	{
		if (displayItem -> categoryName == checkName)
		{
			printf("IDa : %d\n", displayItem -> productID);
			printf("Name : %s\n", displayItem -> productName);
			printf("Price : %.2f\n", displayItem -> productPrice);
			printf("Unit : %d\n", displayItem -> productUnit);
		} else {
			printf("Category\n");
			printf("IDb : %d\n", displayItem -> categoryID);
			printf("Name : %s\n", displayItem -> categoryName); //no output
			checkName[50] = displayItem -> categoryName[50];
			printf("Product\n");


			if (displayItem -> productName == "")
			{
				printf("No product");
			} else {
				printf("IDc : %d\n", displayItem -> productID); //output have problem
				printf("Name : %s\n", displayItem -> productName); //no output
				printf("Price : %.2f\n", displayItem -> productPrice);
				printf("Unit : %d\n", displayItem -> productUnit);
			}
		}
		displayItem = displayItem -> nextPtr;
	}
}


void deleteItem (void)
{
    printf("asdads\n");
}


void updateItem (void)
{
    printf("asdads\n");
}

I found that, all about char has no output, why

Regards,
Milo.