Vector (vector) dynamically opens up two-and three
2016-08-23
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We can see here the address of allocated memory elements in the vector also has a two-dimensional array with dual pointers achieve the same characteristics. But with the vector approach than simply using a double pointer, will be more secure when allocating memory space, the array initialization code more simple, so I recommend using the STL vector to implement variable-length multidimensional arrays.
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