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C/C++为什么不支持直接创建动态的多维数组呢？如果要需要一个二维数组int dpsize1， size1和size2都是在程序运行中确定的。采用
int[][] dp = new int[size1][size2]；
的方式，会报错“expected unqualified-id before '[' token”。
对这类需求可以通过
int** dp = new int*[size1]for (int i = 0; i的方式来创建，但是这样得到的数组在创建是比较麻烦，内存空间也不一定是连续的。为什么c/c++语言不支持直接采用new ints[s]的方式来创建多维数组呢？
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0
为什么c/c++语言不支持直接采用new ints[s]的方式来创建多维数组呢？
因为标准没支持，所以不支持
动态的创建多维数组除了你上面写的那种还可以直接new int[size1 * size2]，然后以偏移来访问，如果不要求连续，还有模板可以用vector
2016-11-11 13:53:59
0
其实现在的C标准是兹磁的，你可以这样写
int *old_dp = malloc(sizeof(int) * size1 * size2); int (*dp)[size2] = (int(*)[size2])(old_dp); // 然后直接写dp[i][j]就可以啦，注意不要越界
c++的话确实是标准不兹磁，如果实在想追求效率的话只能写个函数包装一下了
2016-11-11 13:54:19
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