#include<stdio.h>
void minmax(int *a, int len ,int *max,int *min);
int main(){
	int a[]={1,2,3,4,5,6,7,8,9,12,13,14,15,16,17,21,23,32,55};
	int min ,max;
	printf("main sizeof(a)=%lu\n",sizeof(a));
	minmax(a,sizeof(a)/sizeof a[0],&max ,&min);
	printf("main a=%p\n",a);
	printf("min=%d,max=%d\n",min ,max);
	
	return 0;
}
void minmax(int *a, int len ,int *max,int *min){
	int i;
	printf("minmax sizeof(a)=%lu\n",sizeof(a));
		printf("main a=%p\n",a);
		a[0]=1000;
	*min = *max=a[0];
	for(i=1;i<len ;i++){
		if( a[i] < *min ){
			*min =a[i];
		}
		if(a[i] > *max){
			*max =a[i];
		}
	
	}
}