10/17 進階程式設計練習三

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main(void)
{
    FILE *read;
    read=fopen("score.txt","r");
    int i,j;
    int string[50];
    int count, sum;
    float avg,degree[20];  //avg放平均分數，degree[變數]=1為不及格0
    count=0;


    ////////////////////陣列歸零//////////////////////////

    for (i=0;i<=19;i++)
    degree[i]=0;

    //////////////////讀成績檔////////////////////////

    printf("\n**讀成績檔**\n\n");
    while(!feof(read))
    {
      for(i=1;i<=10;i++)
      fscanf(read,"%d",&string[i]);
      sum=0;
      for(i=1;i<=10;i++)
      {
         sum=sum+string[i];
         printf("%d ",string[i]);
      }

      avg=(float)sum/10;
      if(avg<60)   //將不及格挑出
       degree[count]=1;

       printf("   平均:%.2f", (float)sum/10);
       printf("\n===========================================\n");
       count++;
    }
     fclose(read);


    ////////////讀檔，若degree[count]=1則印出來//////////////

    printf("**讀檔**\n");
    char str[100];
    int b,num;
    read=fopen("student.txt","r");
    count=1;
    printf("不及格的有:\n");
    while(fgets(str,65535,read))
    {
      if(degree[count]==1)
      {
         printf("%s",str);
      }
      count++;
    }
    fclose(read);

     printf("\n===========================================\n");


    system("pause");
    return 0;
}