what are default integer values?

Question

I read somewhere that default floating point values like 1.2 are double not float.
So what are default integer values like 6

Answer 1

Just if someone is interested:

C11 §6.4.4.1/5:

The type of an integer constant is the first of the corresponding list in which its value can be represented.

---------------------------------------------------------------------------
Suffix        Decimal Constant              Octal/Hexadecimal Constant
---------------------------------------------------------------------------
none          int                           int
              long int                      unsigned int
              long long int                 unsigned long int
                                            long long int
                                            unsigned long long int
---------------------------------------------------------------------------
u or U        unsigned int                  unsigned int
              unsigned long int             unsigned long int
              unsigned long long int        unsigned long long int
---------------------------------------------------------------------------
l or L        long int                      long int
              long long int                 unsigned long int
                                            long long int
                                            unsigned long long int
---------------------------------------------------------------------------
Both u or U   unsigned long int             unsigned long int
and l or L    unsigned long long int        unsigned long long int
---------------------------------------------------------------------------
ll or LL      long long int                 long long int
                                            unsigend long long int
---------------------------------------------------------------------------
Both u or U   unsigned long long int        unsigned long long int
and ll or LL
---------------------------------------------------------------------------

As for the prefix §6.4.4.1/3:

A decimal constant begins with a nonzero digit and consists of a sequence of decimal digits. An octal constant consists of the prefix 0 optionally followed by a sequence of the digits 0 through 7 only. A hexadecimal constant consists of the prefix 0x or 0X followed by a sequence of the decimal digits and the letters a (or A) through f (or F) with values 10 through 15 respectively.