[计算机类试卷]国家三级(网络技术)机试模拟试卷165及答案与解析.doc

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国家三级(网络技术)机试模拟试卷 165及答案与解析 一、程序设计题 1 国家三级(网络技术)机试模拟试卷 165答案与解析 一、程序设计题 1 【正确答案】 【试题解析】 定义整型循环变量 i和长整型变量: num。 在 for循环语句中,循环变量 i从 0开始,依次递增直到其值等于或大于 N时,结束循环。在循环体中,把数组元素 xxi的数据类型通过强制数据类型转换成长整型数据所得的整数赋给变量 num,再把 num的值累加到变量 sumint,用数组元素 xxi的值减去 num的值就得到 xxi的小数部分,把这个值累加到变量sumdec。把数组元素 xxi累加到变量 aver。 退出循环后,用变量 aver的值除 N就得到了这 N个实数的平均值,赋给变量aver。

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