使用 realloc 在动态字符串中中止核心转储

如何解决使用 realloc 在动态字符串中中止核心转储

#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
int Init_Arr(int N,int X,int *arr);

void Add_elem(int N,int *arr);

void Del_elem(int N,int *arr);

void Reinit_arr(int N,int *arr);

int main(){
  int N,X,*arr;
  printf("How big array do you want?:");
  scanf("%d",&N);
  arr=(int *)malloc(sizeof(N));
  printf("\nHow much elements do you want in your array?:");
  scanf("%d",&X);
  Init_Arr(N,arr);
  Add_elem(N,arr);
  Del_elem(N,arr);
  Reinit_arr(N,arr);
  return 0;
}
int Init_Arr(int N,int *arr){
  for (int i=0;i<N;i++){
    arr[i]=0;
  }
  for(int i=0;i<X;i++){
    arr[i]=rand()%10+1;
  }
  for(int i=0;i<N;i++){
    printf("%d",arr[i]);
  }
  printf("\nArray is initialised!\n");
  return 0;
}

void Add_elem(int N,int *arr){
  int add;
  int help;
  int i=0;
  printf("\nWhat element do you want to add?:");
  scanf("%d",&add);
  while(arr[i]!=0){
    i++;
  }
  arr[i]=add;
  for(int i=0;i<N;i++){
    printf("%d",arr[i]);
  }
  printf("\nElement was added to array!\n");
}
void Del_elem(int N,int *arr){
  int del;
  printf("\nWhat element do you want to delete from array?:");
  scanf("%d",&del);
  arr[del]=0;
  for(int i=0;i<N;i++){
    printf("%d",arr[i]);
  }
  printf("\nElement was deleted from array!\n");
}
void Reinit_arr(int N,int *arr){
  int *copyarr;
  int D;
  copyarr=(int *)realloc(sizeof(N));
  for(int i=0;i<N;i++){
    copyarr[i]=arr[i];
  }
  printf("How big array now do you want?:");
  scanf("%d",&D);
  arr=(int*)realloc(arr,sizeof(D));
  for(int i=0;i<N;i++){
    arr[i]=copyarr[i];
  }
  for(int i=N;i<D;i++){
    arr[i]=0;
  }
  for(int i=0;i<D;i++){
    printf("%d",arr[i]);
  }
  printf("\nArray was reinitialised\n");
}

嗯，这个程序应该按以下方式工作：初始化一个动态字符串，用X个随机元素填充它，然后在正数字符串的末尾添加任何元素，删除数组的任何元素（只需将其设置为0）以及问题函数：重新分配内存并把字符串变大，里面复制。问题是它只是在函数中说“中止”

Reinit_arr(N,arr);

GDB 说在尝试这个函数后程序返回如下：raise.c：没有那个文件或目录。你能帮我吗？