>>46298
I reproduced the error with a simpler code, where b=2. Replacing..
int x[][b]
by..
int x[][2]
.. solves it.

>>46326
still ERROR

>>46298
because b is undeclared in "int x[][b]"

>>46327
can you show us the updated version ?

>>46298
well 1. b is out of scope, its in scope in main but not the declaration of input and output
2. you cant dynamically spec a 2d array like that. you can do 1d dynamically i think? but you read in a and b so the compiler can't assign memory space for the array because it doesn't know how big it is or something stupid shit like this.

what about doing it the c++ way
create a matrix class or use the existing one
because it looks like you didn't read the preliminaries section of your book well

>>46334
In C, arrays are just raw values packed end-to-end, accessed by multiplying the offset by the size and adding it to the base pointer.

Two dimensional arrays are stored the same way:

aaaaaaaaa
bbbbbbbbb
ccccccccc
ddddddddd

becomes aaaaaaaaabbbbbbbbbcccccccccddddddddd.

How would you get value one in row b if the size of the rows was undefined? You'd simply multiply the size by the column offset, and add that to the size multiplied by the row offset multipled by...

Oh.