C'de pointer hataları. Acil Yardım ! (Çözüldü)

#include <stdio.h> 
  #include <stdlib.h> 
   
  typedef struct Node{ 
  	int t; 
  	int ts; 
  	struct node *next; 
  }node; 
   
  typedef struct Head{ 
  	int c; 
  	struct node *first; 
  	struct node *tail; 
  }head; 
   
  void start(**myHead){  //Henüz yazmadim. 
  } 
   
  void MyFunction(head *myHead ){ 
  		node * newNode; 
   
  		newNode=((node*)malloc(sizeof(node))); 
   
  		//İçinnde MyHead geçen herşey hata veriyor burdan itibaren 
  		while(newNode->ts >(*myHead)->c){ 
  			start(myHead); 
  		} 
  		if(*myHead->first==NULL){ 
  			(*myHead)->first=newNode; 
  			(*myHead)->tail=newNode; 
  		} 
  		else{ 
  			(*myHead)->tail->next = newNode; 
  			(*myHead)->tail = newNode; 
  		} 
  		newNode->next=NULL; 
  		return; 
  } 
   
   
  int main(void) { 
  	int choice; 
  	head * myHead; 
  	myHead=((head*)malloc(sizeof(head))); 
   
      if(myHead == NULL){ //ERROR CHECK 
          printf("Unable to allocate memory\n"); 
      	fflush(stdout); 
      	return 0; 
      } 
      else{ 
      	myHead->c=0; 
      	myHead->first=NULL; 
      	myHead->tail=NULL; 
      	choice=0; 
   
  	MyFunction(&myHead);// Nasil yollayacagim? 
   
   
   
  	} 
   
  	return 0; 
  }