5/14 C++練習三

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main(void)
{
    int i,max=0,min=999;
    int num,no[1000];
    int count=0;
    srand(time(NULL));

///////////////////陣列歸零//////////////////////
for (i=0;i<=999;i++)
no[i]=0;

//////////////////隨機產生不重複的數字///////////

while(count<31)
{
              num=rand()%1000;
              if(no[num]==0)
              {
              no[num]=1;
              count++;
              }
}

//////////////////找出最大值與最小值//////////////
FILE *written;
written=fopen("random01.txt","w");
printf("開出的號碼是:\n");
for(i=0;i<=999;i++)
{
if(no[i]==1)
    {
            printf("%d\n",i);
            fprintf(written,"%d ",no[i]);
            if(i>max && i>99 && i<501)
            {
                     max=i;
            }
              if(i<min && i>99 && i<501)
            {
                     min=i;
            }


    }
}
 close(written);

 printf("==================================");
 printf("\n寫檔完成");
 printf("\n==================================\n");
 printf("Max=%d\nMin:%d\n\n",max,min);


    system("pause");
    return 0;
}