Does GCC support long long int?

Question

Does GCC support:

long long int

which would be a 64-bit integer?

Also, is long long int part of the standard?

Answer 1

On my 32-bit machine,

int main()
{
    printf("%d\n", sizeof(long long int));
    return 0;
}

compiled with gcc prints 8 (8 bytes * 8 bits/byte = 64 bits).