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全国计算机等级考试二级C语言上机题81

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[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81

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:求出千位数上的数加百位数等于十位数上的数加个位数上的数的个数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()把结果输出到out.dat文件。

 例如:7153,7+1=5+3,则该数满足条件计算平均值pjz1,且个数cnt=cnt+1。8129,8+12+9,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;



jsvalue()

{int i,thou,hun,ten,data,n=0;

 for(i=0;i

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