CODEWITHSUNDEEP
cstructlinked-list
Anthony
Anthony

Reputation: 15

Error: Expected Expression Before 'struct', when making a linked list

I keep getting an error when trying to make a linked list. The error is "expected expression before 'struct'" on both of the lines where I try to malloc() a new node. I've looked at similar questions and tried to fix my code but I can't get it to work. Any help would be very much appreciated. 

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

struct List {
    int x;
    struct List *next;
};

int main() {
    struct List* head = (struct List*)malloc(sizof(struct List));
    if (head == NULL) {
        return 1;
    }

    head->x = 1;
    head->next = (struct List*)malloc(sizof(struct List));
    head->next->x = 2;
    head->next->next = NULL;

    struct List* current = head;
    while(current != NULL) {
        printf("%d", current->x);
        current = current->next;
    }
    return 0;
}

Upvotes: 1

Views: 3765

Answers (1)

Vlad from Moscow
Vlad from Moscow

Reputation: 310930

There is a typo in statements like this

struct List* head = (struct List*)malloc(sizof(struct List));
                                         ^^^^^

There must be

struct List* head = (struct List*)malloc(sizeof(struct List));
                                         ^^^^^^

Take into account that according to the C Standard the function main without parameters shall be declared like

int main( void )

And you should free all allocated memory for the list before exiting the program.

Upvotes: 1

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