C动态数组+随机数，求max和min

//动态数组+随机数，求max和min
//11-99: rand()%89+11--->[0,88]+11
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
int distribute(int*,int*);//动态分配空间
void find(int*,int);//找 
int main()
{
	int n = 0;//长度 
	int*a,*p;
	int flag = 1;
	
	flag=distribute(&n,a);
	p = a;
	
	for(int i=0;i<n;i++)
		a[i] = rand()%88+11;
		
	a = p;
	printf("动态数组内容为:");
	
	for(int i=0;i<n;i++)
		printf("%4d",a[i]);
	
	if(flag)
		find(a,n);
	else
		printf("未能成功分配空间，所以程序不运行\n");
	
	return 0;
} 

int distribute(int*length,int*a)
{
	scanf("%d",length);
	printf("Input n:%d",*length);
	printf("\n");
	
	//(类型*)malloc(个数*字节数); 
	//动态分配n个元素的存储空间 
	a = (int*)malloc(*length*sizeof(int));
	if(a==NULL)
	{
		printf("内存分配失败!");
		return 0;
	}
	else
		return 1;	
}

void find(int*p,int n)
{
	printf("\n");
	int i,j;
	int max,min;
	
	max = *p;
	min = *p;
	
	for(i=1;i<n;i++)
	{
		if(max<p[i])
			max = p[i];
		if(min>p[i])
			min = p[i];
	}
	printf("最大值:%d, 最小值:%d\n",max,min);
}