C++程序设计语言练习4.5

标签：

C++标准库通过template  numeric_limits提供数值类型的极限值。使用这个模板，可以一定程度的提高程序的可移植性。

#include <iostream>
#include <limits>
using std::cout;
using std::endl;
using std::numeric_limits;
int main(){
  cout<<" the min of char is: "<<(int)numeric_limits<char>::min()<<endl;
  cout<<" the max of char is: "<<(int)numeric_limits<char>::max()<<endl;
  cout<<" the min of short is: "<<numeric_limits<short>::min()<<endl;
  cout<<" the max of short is: "<<numeric_limits<short>::max()<<endl;
  cout<<" the min of int is: "<<numeric_limits<int>::min()<<endl;
  cout<<" the max of int is: "<<numeric_limits<int>::max()<<endl;
  cout<<" the min of long is: "<<numeric_limits<long>::min()<<endl;
  cout<<" the max of long is: "<<numeric_limits<long>::max()<<endl;

  cout<<" the min of float is: "<<numeric_limits<float>::min()<<endl;
  cout<<" the max of float is: "<<numeric_limits<float>::max()<<endl;
  cout<<" the min of double is: "<<numeric_limits<double>::min()<<endl;
  cout<<" the max of double is: "<<numeric_limits<double>::max()<<endl;
  cout<<" the min of long double is: "<<numeric_limits<long double>::min()<<endl;
  cout<<" the max of long double is: "<<numeric_limits<long double>::max()<<endl;

  cout<<" the min of unsigned is: "<<numeric_limits<unsigned>::min()<<endl;
  cout<<" the max of unsigned is: "<<numeric_limits<unsigned>::max()<<endl;
}

[chaos@localhost cpp]$ g++ -o 4.5 ./4.5.cpp
[chaos@localhost cpp]$ ./4.5
 the min of char is: -128
 the max of char is: 127
 the min of short is: -32768
 the max of short is: 32767
 the min of int is: -2147483648
 the max of int is: 2147483647
 the min of long is: -9223372036854775808
 the max of long is: 9223372036854775807
 the min of float is: 1.17549e-38
 the max of float is: 3.40282e+38
 the min of double is: 2.22507e-308
 the max of double is: 1.79769e+308
 the min of long double is: 3.3621e-4932
 the max of long double is: 1.18973e+4932
 the min of unsigned is: 0
 the max of unsigned is: 4294967295

C++程序设计语言练习4.5

标签：

原文地址：http://blog.csdn.net/armor51/article/details/51360612