为什么一个参数能储存 另外一个不能

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

typedef struct
{      
    double hx;   
    int nx;   
} Level;

typedef struct
{   
  Level *Lk;
} Stack;


void initialize(Stack *V, int nx0)
{   
    Level *L;           
    V->Lk=(Level *)calloc(1,sizeof(Level));   
    L=V->Lk+1;
    L->hx=nx0/2;        
    L->nx=nx0;            
    printf("\n level: nx=%d hx=%f",L->nx,L->hx);            
         
}

void init_p(Stack *V, int c)
{   
    Level *L;   
    L=V->Lk+c;
    printf("\nnx is %d",L->nx);
    printf("\nhx is %d\n",L->hx);   
}

void main()
{   
    Stack V;   
    initialize(&V,5);   
    init_p(&V,1);   
}