climits中的符号常量

 climits中的符号常量

 

 

符号常量	表示
CHAR_BIT	char 的位数
CHAR_MAX	char 的最大值
CHAR_MIN	char 的最小值
SCHAR_MAX	signed char 的最大值
SCHAR_MIN	signed char 的最小值
UCHAR_MAX	unsigned char 的最大值
SHRT_MAX	short 的最大值
SHRT_MIN	short 的最小值
USHRT_MAX	unsigned short 的最大值
INT_MAX	int 的最大值
INT_MIN	int 的最小值
UNIT_MAX	unsigned int 的最大值
LONG_MAX	long 的最大值
LONG_MIN	long 的最小值
LONG_MAX	unsigned long 的最大值

 

#include <iostream>
#include <climits>
using namespace std;
int main()
{
    cout << "Size:" << endl;
    cout << "int is     "   << sizeof (int)     << "bytes." << endl;
    cout << "short is   "   << sizeof (short)   << "bytes." << endl;
    cout << "long is    "   << sizeof (long)    << "bytes." << endl << endl;

    cout << "Bits per byte = " << CHAR_BIT << endl << endl;

    cout << "Maximum values:" << endl;
    cout << "int:           "   << INT_MAX << endl;
    cout << "short:         "   << SHRT_MAX << endl;
    cout << "long:          "   << LONG_MAX << endl;
    cout << "char:          "   << CHAR_MAX << endl;
    cout << "signed char:   "   << SCHAR_MAX << endl;
    cout << "unsigned int:  "   << UINT_MAX << endl;
    cout << "unsigned short:"   << USHRT_MAX << endl;
    cout << "unsigned long: "   << ULONG_MAX << endl;
    cout << "unsigned char: "   << UCHAR_MAX << endl << endl;

    cout << "Minimum values:" << endl;
    cout << "int:           "   << INT_MIN << endl;
    cout << "short:         "   << SHRT_MIN << endl;
    cout << "long:          "   << LONG_MIN <<endl;
    cout << "char:          "   << CHAR_MIN <<endl;
    cout << "signed char:   "   << SCHAR_MIN  <<endl;

    system("pause");

    return 0;
}