c++基本数据类型及其取值范围
1 #include<iostream> 2 #include<string> 3 #include <limits> 4 using namespace std; 5 6 int main() 7 { 8 cout << "type: \t\t\t" << "************size**************" << endl; 9 cout << "bool: \t\t\t" << "所占字节数：" << sizeof(bool); 10 cout << "\t\t最大值：" << (numeric_limits<bool>::max)(); 11 cout << "\t\t\t\t\t\t\t最小值：" << (numeric_limits<bool>::min)() << endl; 12 13 cout << "char: \t\t\t" << "所占字节数：" << sizeof(char); 14 cout << "\t\t最大值：" << (numeric_limits<char>::max)(); 15 cout << "\t\t\t\t\t\t\t最小值：" << (numeric_limits<char>::min)() << endl; 16 17 cout << "signed char: \t" << "所占字节数：" << sizeof(signed char); 18 cout << "\t\t最大值：" << (numeric_limits<signed char>::max)(); 19 cout << "\t\t\t\t\t\t\t最小值：" << (numeric_limits<signed char>::min)() << endl; 20 21 cout << "unsigned char: \t" << "所占字节数：" << sizeof(unsigned char); 22 cout << "\t\t最大值：" << (numeric_limits<unsigned char>::max)(); 23 cout << "\t\t\t\t\t\t\t最小值：" << (numeric_limits<unsigned char>::min)() << endl; 24 25 cout << "wchar_t: \t\t" << "所占字节数：" << sizeof(wchar_t); 26 cout << "\t\t最大值：" << (numeric_limits<wchar_t>::max)(); 27 cout << "\t\t\t\t最小值：" << (numeric_limits<wchar_t>::min)() << endl; 28 29 cout << "short: \t\t\t" << "所占字节数：" << sizeof(short); 30 cout << "\t\t最大值：" << (numeric_limits<short>::max)(); 31 cout << "\t\t\t\t\t\t最小值：" << (numeric_limits<short>::min)() << endl; 32 33 cout << "int: \t\t\t" << "所占字节数：" << sizeof(int); 34 cout << "\t\t最大值：" << (numeric_limits<int>::max)(); 35 cout << "\t\t\t\t最小值：" << (numeric_limits<int>::min)() << endl; 36 37 cout << "unsigned: \t\t" << "所占字节数：" << sizeof(unsigned); 38 cout << "\t\t最大值：" << (numeric_limits<unsigned>::max)(); 39 cout << "\t\t\t\t最小值：" << (numeric_limits<unsigned>::min)() << endl; 40 41 cout << "long: \t\t\t" << "所占字节数：" << sizeof(long); 42 cout << "\t\t最大值：" << (numeric_limits<long>::max)(); 43 cout << "\t\t最小值：" << (numeric_limits<long>::min)() << endl; 44 45 cout << "long long: \t\t" << "所占字节数：" << sizeof(long long); 46 cout << "\t\t最大值：" << (numeric_limits<long long>::max)(); 47 cout << "\t\t最小值：" << (numeric_limits<long long>::min)() << endl; 48 49 cout << "unsigned long: \t" << "所占字节数：" << sizeof(unsigned long); 50 cout << "\t\t最大值：" << (numeric_limits<unsigned long>::max)(); 51 cout << "\t\t最小值：" << (numeric_limits<unsigned long>::min)() << endl; 52 53 cout << "double: \t\t" << "所占字节数：" << sizeof(double); 54 cout << "\t\t最大值：" << (numeric_limits<double>::max)(); 55 cout << "\t\t\t\t最小值：" << (numeric_limits<double>::min)() << endl; 56 57 cout << "long double: \t" << "所占字节数：" << sizeof(long double); 58 cout << "\t最大值：" << (numeric_limits<long double>::max)(); 59 cout << "\t\t\t\t最小值：" << (numeric_limits<long double>::min)() << endl; 60 61 cout << "float: \t\t\t" << "所占字节数：" << sizeof(float); 62 cout << "\t\t最大值：" << (numeric_limits<float>::max)(); 63 cout << "\t\t\t\t最小值：" << (numeric_limits<float>::min)() << endl; 64 65 cout << "size_t: \t\t" << "所占字节数：" << sizeof(size_t); 66 cout << "\t\t最大值：" << (numeric_limits<size_t>::max)(); 67 cout << "\t\t最小值：" << (numeric_limits<size_t>::min)() << endl; 68 69 cout << "string: \t\t" << "所占字节数：" << sizeof(string) << endl; 70 // << "\t最大值：" << (numeric_limits<string>::max)() << "\t最小值：" << (numeric_limits<string>::min)() << endl; 71 cout << "\t\t\t\t" << "************size**************" << endl; 72 return 0; 73 }
--- 参考自的博客kilen的博客。运行结果：
