Thread: Data type

Hi ! for some purposes I want my program to do a matrix with size
which is:
size=10000000000
which the matrix will be on size 100000*100000
what data type should I used? it's integer but I mean long integer or what? because while ordering my program to print that value, in my command console doesn't appear anything, and tells me process finished with exit code -1073741819.
Afterwards I tried to print instead of size=10000000000 , I tried size=60
it printed out to my screen, any clue what's going on? and how can I deal with that big number?
I used

Code:

 printf("%llu", matrix[i][j]);

and it didn't prints out!

thanks alot

Try:

Code:

long long x = 10000000000LL;
printf("%lld\n", x);

If that doesn't work, state your compiler and its version.

EDIT:
Wait, I just saw that you started talking about matrices. The type to consider for printf is the type of an element of the matrix, it has nothing to do with the size. The size would introduce concerns about whether you're allocating on the stack etc, but that's a different story.

> I'm totally with you, but if I put size matrics smaller then it works for me fine!! but if I put size like 10000000000
Try to realise that your machine is finite, and you just can't throw in arbitrarily large numbers for an array size without consequences.

Post the code you have for a size which works, and then ask how to make it larger.

It also helps to know if your matrix has any special properties, like
- it's sparse
- it's only an upper/lower diagonal
- it's only got booleans