Maximum value for unsigned int

Question

Here is what I want:

unsigned int max_unsigned_int_size; max_unsigned_int_size = ???; 

How can I do it?

Answer 1

C

 #include <limits.h> unsigned int max_unsigned_int_size = UINT_MAX; 

C ++

 #include <limits> unsigned int max_unsigned_int_size = std::numeric_limits<unsigned int>::max(); 

Answer 2

 unsigned int max_unsigned_int_size = -1; 

correct operation guaranteed. Arithmetic with unsigned types is always modulo.

But in a specific case, you should always use UINT_MAX

Answer 3

You are looking for

 #include <limits> std::numeric_limits<unsigned int>::max(); 

If you want size, sizeof will do, multiply CHAR_BITS to get the bit.

Alternatively there is

 std::numeric_limits<unsigned int>::digits(); 

Answer 4

You need std::numeric_limits::max()

 #include <limits> ... max_insigned_int_size = std::numeric_limits<unsigned int>::max(): 

Answer 5

• For C, the value is set to UINT_MAX in limits.h .
• For C ++, you can also use std::numeric_limits<unsigned int>::max() from limits .

Answer 6

 #include <limits> max_unsigned_int_size = std::numeric_limits<unsigned int>::max();