int xx[MAXNUM];
int totnum=0;
int totcnt=0;
double totpjz=0.0;

int readdat(void);
void writedat(void);

void calvalue(void)
{

}
totpjz/=totcnt;
}

void main()
{
int i;
clrscr();
for(i=0;i<MAXNUM;i++) xx[i]=0;
if(readdat())
{printf("Can't open the data file in.dat!\007\n");
return;
}
calvalue();
printf("totnum=%d\n",totnum);
printf("totcnt=%d\n",totcnt);
printf("totpjz=%.2lf\n",totpjz);
writedat();
}

int readdat(void)
{
FILE *fp;
int i=0;
if((fp=fopen("in.dat","r"))==NULL) return 1;
while(!feof(fp))
fscanf(fp,"%d,",&xx[i++]);
fclose(fp);
return 0;
}

void writedat(void)
{
FILE *fp;
fp=fopen("out.dat","w");
fprintf(fp,"%d\n%d\n%.2lf\n",totnum,totcnt,totpjz);
fclose(fp);
}

/* 注：该题与题41相似。*/
void calvalue(void)
{
int i,data;
for(i=0;i<MAXNUM;i++)
{if(!xx[i]) break;
if(xx[i]>0) totnum++;
data=xx[i]>>1;
if(data%2)
{totcnt++;
totpjz+=xx[i];
}
}
totpjz/=totcnt;
}

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