problem with dynamic allocation

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define FMAX 6
typedef struct cell *CellPtr;
typedef struct cell {
int contents; /* contents of the cell */
CellPtr next; /* next cell in the list */
} Cell;

CellPtr insert (int input, CellPtr list);
void print_list(CellPtr list);
int main()
{
     char function[FMAX];
     CellPtr list=NULL;
     int number;
      while(1)
    {
        printf("< ");
        scanf("%s",function);
        if(strcmp(function,"insert")==0)
        {
           scanf("%d", &number);
           list=insert(number,list);
           print_list(list);
        }
       if(strcmp(function,"print")==0)
       {
          print_list(list);
       }
   }
return 0;
}

void print_list(CellPtr list)
{
    if (list==NULL)
    {
       printf("The list is empty!\n");
    }
    else
    {
        while(list!=NULL)
        {
            printf ("%d ->",list->contents);
            list=list->next;
        }
        printf("\n");
    }   
}

CellPtr insert(int input, CellPtr list)
{
    CellPtr new_list, current_node;

    if ((new_list=(CellPtr)malloc(sizeof(CellPtr)))== NULL)
    {
        printf(" Memory allocation failed !\n");
        exit (1);
    }
    new_list->contents=input;
   if(list==NULL)
   {
       new_list->next= list;
       return new_list;
   }
   else
   {
     current_node=list;
     while(current_node->next!=NULL)
           {
               current_node=current_node->next;
           }
        new_list->next=current_node->next;
        current_node->next=new_list;
        return list;
    }   
}
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