CODEWITHSUNDEEP
cpointersstruct
zaro
zaro

Reputation: 83

Getting incompatible pointer type error while working with structs

I am writing a program with in which I have to create a list of employees and work with the information in it. In the writeToFile I write the info. to a .txt file. In the newList I should create a new list, which will contain employees which match certain criteria. However, when I intiliaze *newListHead pointer I get initialization of 'newEmployeeList *' {aka 'struct newEmployeeList *'} from incompatible pointer type 'List *' {aka 'struct List *'} [-Wincompatible-pointer-types]| error. What am I doing wrong since I did the same thing for the head pointer?

typedef struct employee {
    char name[20];
    double salary;
    char gender[10];
} employee;

typedef struct List {
    employee info;
    struct List *next;
} List;

typedef struct newEmployeeList {
    employee info;
    struct newEmployeeList *next;
} newEmployeeList;

List *create_new_node() {
    List *new_node = NULL;
    new_node = (List*)malloc(sizeof(List));
    new_node->next = NULL;
    return new_node;
};

int main()
{
    List *head = create_new_node();
    writeToFile("test.txt", head);

    newEmployeeList *newListHead = create_new_node();
    newList(head, newListHead);

    return 0;
}

Upvotes: 2

Views: 356

Answers (1)

dbush
dbush

Reputation: 225757

As the error message says, the create_new_node function is returning a List * but you're assigning that value to a newEmployeeList *. Those types are incompatible.

Either change the type of newListHead to List * or create a different function that returns a new instance of newEmployeeList *. I'd recommend the former as there's no reason to even have the type newEmployeeList from what you've shown.

Upvotes: 1

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