[职称英语等级考试模拟题理工类ＡＢ级]第1部分 词汇 选择（第1-15题，每题1分，共15分，建议10分钟以内完成）下面共有15句子，每个句子均有一个词或短语划有底横线，请从每个句子后面所给的四个选项中选择一个与划线部分意义...+阅读
★题目82
已知数据文件in.dat中存有300个四位数，并已调用读函数readdat()把这些数存入数组a中，请编制一函数jsvalue()，其功能是：求出所有这些四位数是素数的个数cnt，再求出所有满足此条件的四位数平均值pjz1，以及不满足此条件的四位数平均值pjz2，后调用写函数writedat()把结果cnt,pjz1,pjz2输
出到out.dat文件。
例如：5591是素数，则该数满足条件计算平均值pjz1，且个数cnt=cnt+1。
9812是非素数，则该数不满足条件计算平均值pjz2。
部分源程序存在文件prog1.c中。
程序中已定义数组：a[300]，已定义变量：cnt,pjz1,pjz2
请勿改动主函数main()、读函数readdat()和写函数writedat()的内容。
&emspinclude
int a[300],cnt=0;
double pjz1=0.0,pjz2=0.0;
int isp(int m)
{int i;
for(i=2;i if(m%i==0)return 0;
return 1;
}
jsvalue()
{int i;
for(i=0;i
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