>>347
#include<stdio.h>

int main(void){
int data[]={4,7,2,1,9};
int i, maximum, minimum;

maximum=minimum=data[0];
for(i=1;i<sizeof(data)/sizeof(data[0]);i++){
maximum=data[i]>maximum?data[i]:maximum;
minimum=data[i]<minimum?data[i]:minimum;
}
printf("max:%d min:%d\n", maximum, minimum);

return 0;
}