1_pro.c

C源代码 计算机等级考试C语言上机题

#include  <stdio.h>
int a[300],cnt=0;
double pjz1=0.0,pjz2=0.0;
jsValue()
{
  int i,thou,hun,ten,data,n=0;
  for(i=0;i<300;i++)
  {
    thou=a[i]/1000;                /*求四位数的千位数字*/
    hun=a[i]%1000/100;            /*求四位数的百位数字*/
    ten=a[i]%100/10;              /*求四位数的十位数字*/
    data=a[i]%10;                  /*求四位数的个位数字*/
    if (thou-hun-ten-data>0)
      {  cnt++; pjz1+=a[i]; }    /*统计满足条件的数的个数并求和*/
    else
      {  n++; pjz2+=a[i]; }       /*统计不满足条件的数的个数并求和*/
  }
  pjz1/=cnt;                        /*求满足条件的数的平均值*/
  pjz2/=n;                          /*求不满足条件的数的平均值*/
}
main()
{ 
  int i;
  readDat();
  jsValue();
  writeDat();
  printf("cnt=%d\n满足条件的平均值pzj1=%7.21f\n不满足条件的平均值pzj2=%7.21f\n",
cnt,pjz1,pjz2);
}
readDat()
{
  FILE *fp;
  int i;
  fp=fopen("IN15.DAT","r");
  for (i=0;i<300;i++)  fscanf(fp, "%d,",&a[i]);
  fclose(fp);
}
writeDat()
{ 
  FILE *fp;
  int i;
  fp=fopen("OUT15.DAT","w");
  fprintf(fp,"%d\n%7.21f\n%7.21f\n",cnt,pjz1,pjz2);
  fclose(fp);
}