ch26-3.c

C语言程序设计上机指导与练习 冶金工业出版社 刘怀亮

#include "stdio.h"
#include<stdlib.h> 
#include<conio.h> 
void main() 
{ 
   int a[21],i,ran,max,min,sum,average; 
   for (i=1;i<=20;i++) 
   { 
      while((ran=random(51))/10==0) /*ensure ran between 10 and 50 */
         ; 
      a[i]=ran; 
   } 
   max=min=a[1]; // initialize here 
   sum=0; 
   for(i=1;i<=20;i++) 
   { 
      printf("a[%d]=%d\n",i,a[i]); 
      sum+=a[i]; 
      if(max<a[i]) 
         max=a[i]; 
      else if(min>a[i]) 
         min=a[i]; 
   } 
   average=sum/20; 
   printf("\nsum=%d, max=%d, min=%d, average=%d \n",sum,max,min,average); 
}