Use symbolic constants in header file Climits to learn the range of table numbers for integer data---gyy finishing

The various symbolic constants are defined in the header file Climits (limits.h) in a macro definition to represent the range of various integer type representations, such as the maximum minimum value of int, the maximum minimum value of long, and so on.

Symbolic constants	Said
Char_bit	The number of bits of char
Char_max	Maximum value of Char
Char_min	Minimum value of Char
Schar_max	Maximum value of signed Char
Schar_min	Signed minimum value of Char
Uchar_max	Maximum value of unsigned char
Shrt_max	The maximum value of short
Shrt_min	Minimum value of short
Ushrt_max	Unsigned the maximum value of short
Int_max	The maximum value of int
Int_min	The minimum value of int
Unit_max	Maximum value of unsigned int
Long_max	The maximum value of long
Long_min	The minimum value of long
Long_max	Unsigned the maximum value of long

[CPP]View PlainCopy

2. #include <iostream>
4. #include <climits>
6. Using namespace std;
8. int main ()
10. {
12. cout << "Size:" << Endl;
14. cout << "int is" << sizeof (int) << "bytes." << Endl;
16. cout << "short are" << sizeof (short) << "bytes." << Endl;
18. cout << "Long is" << sizeof (long) << "bytes." << Endl << Endl;
20. cout << "Bits per byte =" << char_bit << endl << Endl;
24. cout << "Maximum values:" << Endl;
26. cout << "int:" << int_max << Endl;
28. cout << "short:" << shrt_max << Endl;
30. cout << "long:" << Long_max << Endl;
32. cout << "char:" << char_max << Endl;
34. cout << "signed char:" << schar_max << Endl;
36. cout << "unsigned int:" << uint_max << Endl;
38. cout << "unsigned short:" << ushrt_max << Endl;
40. cout << "unsigned long:" << Ulong_max << Endl;
42. cout << "unsigned char:" << uchar_max << endl << Endl;
46. cout << "Minimum values:" << Endl;
48. cout << "int:" << int_min << Endl;
50. cout << "short:" << shrt_min << Endl;
52. cout << "long:" << long_min <<endl;
54. cout << "char:" << char_min <<endl;
56. cout << "signed char:" << schar_min <<endl;
60. System ("pause");
64. return 0;
66. }

Run results

The result is consistent with the subscript.

Note: The symbolic constants in the header file Climits are the range of table numbers that are known to the integer data, and cannot get the range of table numbers for floating-point type data.

<cfloat> The header file contains the system's floating-point length limit, which replaces the header file <float.h>
<climits> The header file contains the system's integer length limit, which has replaced the header file <limits.h>

Use symbolic constants in header file Climits to learn the range of table numbers for integer data---gyy finishing