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C++没有提供直接获取二维数组长度的函数,可以通过以下方式获取。
lines = sizeof(a) / sizeof(a[0][0]);
row = sizeof(a) / sizeof(a[0]);
column = lines / row;
lines = sizeof(a) / sizeof(a[0][0]);
row = sizeof(a) / sizeof(a[0]);
column = lines / row;