array initialization problem

[huzhanchi]

hi everyone!

int num=6;
int s[num];

the compiler says:'s'unknown size.why this way cannot work.

thanks in advance.

[Bazzy]

The size of an array must be a constant value. If you want a resizable array use std::vector or std::deque
http://www.cplusplus.com/reference/stl/

[huzhanchi]

thank you.
you usually give me the answer and more than this.

[firedraco]

If you want to make a constant number, then you must specify it is const, e.g.

const int num = 6;

[huzhanchi]

After i have a try ,i find the std::vector is very strong.(thanks also to firedraco
)