help with arrays

[klay2]

need to know how to do some thing like this example

  n[x]

[SamuelAdams]

try Google.

[ResidentBiscuit]

n[x]
There ya go

[klay2]

im doing this in setpixel and it doesn't work

[nomijigr]

array space must be const

[nomijigr]

you are providing a variable for array size..it must be some constant

[klay2]

it cant be a constant it needs to change I,m using a while loop to draw different squares in different areas

[nomijigr]

its against the syntax of arrays dear

[Zhuge]

Try dynamic memory

[giblit]

Then use a std::vector or some other STL container. Your question is very vague.
http://www.cplusplus.com/reference/vector/vector/

[nomijigr]

http://www.cplusplus.com/forum/beginner/1601/

hope it helps...same question

[klay2]

so is there anything else I could do I tried a vector but I couldn't declare it right

[nomijigr]

what compiler are u using

[klay2]

vc++ 2010

[Zhuge]

How did you try to declare it?

[klay2]

vector<int> x (4);

[nomijigr]

u can do it by creating dynamic array like this
int* array = new int [ x ];

[klay2]

so like int* array = x [4]

[nomijigr]

int* a = NULL; // Pointer to int, initialize to nothing.
int n; // Size needed for array
cin >> n; // Read in the size
a = new int[n]; // Allocate n ints and save ptr in a.
for (int i=0; i<n; i++) {
a[i] = 0; // Initialize all elements to zero.
}
. . . // Use a as a normal array
delete [] a; // When done, free memory pointed to by a.
a = NULL; // Clear a to prevent using invalid memory reference.


here is a complete solution to ur question

[Zhuge]

vector<int> x (4);

looks fine, what errors did you get?