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;
void 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(data-thou-hun-ten>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*/
}
writeDat()
{
  FILE *fp;
  int i;
  fp=fopen("OUT16.DAT","w");
  fprintf(fp,"%d\n%7.2lf\n%7.2lf\n",cnt ,pjz1,pjz2);
  fclose(fp);
}
main()
{
  int i;
  readDat();
  jsValue();
  writeDat();
  printf("cnt=%d\n满足条件的平均值pjz1=%7.2lf\n不满足条件的平均值pjz2=%7.2lf\n",
cnt,pjz1,pjz2);
}
readDat()
{
  FILE *fp;
  int i;
  fp=fopen( "IN16.DAT","r");
  for(i=0;i<300;i++)
  fscanf(fp,"%d,",&a[i]);
  fclose(fp);
}