Matrices operations

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i have the following problem i just want to know if i should use pointers . thank you

Design and implement a class Matrixtype that can store a matrix of any size . overload the operators + - * to perform addition , subtraction and multiplication .

if you please tell me how to write the constructor in the class .

Posted 23-Oct-10 5:15am

joek1991

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Emilio Garavaglia · Answer 1 · 2010-10-23T09:25:00

If they must have "any size" than the allocation must be dynamic, and hence you have to use (at least internally of the class) pointers.
But pointers can be managed internally by some other library class that handle all the allocation /deallocation stuff, like std::vector.

Since the matrix can be "any size", you can construct in some ways:
- Construct a "zero sized matrix" (invalid) letting it be initialized later (for example, by assigning a result)
- Construct a "one sized matrix" (scalar) given an optional value defailting to zero
- Construct matrix given its size (you can fill up with zeores, or making it an identity matrix, if squared etc.) and a optional constant array of constants (that act as an initializer)