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程序设计2-二维数组(必做): 请在本地磁盘E中新建文件夹,名为学号+姓名,并新建一个C文件至此文件夹中,要求C文件命名为学号+姓名+题号(例如学号0913418006,的第1题,则本题源程序名命名为:09134180061.c) 二维数组编程: 先从键盘上输入一个3行3列矩阵的各个元素的值,然后输出主对角线元素之积。 例如:运行时输入 1 3 9 2 6 7 3 1 8 则结果应显示为:主对角线元素之积为48
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