3.c

3.c

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

struct node {
	int data;
	struct *node next;
};

void push(struct node** headRef, int data)
{
	struct node* newNode;
	newNode = malloc(sizeof(struct node));
	newNode->data = data;
	newNode->next = *headRef;

	*headRef = newNode;
}

struct node* primeFactors(int num)
{
	struct node* head = NULL;
	if (num == 1)
	{
		return head;
	}
	int factor = 0;
	int i = 2;
	while (i <= num)
	{
		if (num % i)
		{
			factor = i;
		}
	}
	push(&head, factor);
	primeFactors(num / factor);
	return head;
}

int main(int argc, char const *argv[])
{
	struct node* head = primeFactor(600851475143);
	printf("%d/n", head->data);
}

Errors

[1] $ gcc 3.c -o 3                                                                                                                 
3.c:6:9: error: expected ‘{’ before ‘*’ token
3.c: In function ‘push’:
3.c:14:9: error: ‘struct node’ has no member named ‘next’
3.c: In function ‘main’:
3.c:42:22: warning: initialisation makes pointer from integer without a cast [enabled by default]