操纵比算法已在下面的设置1中进行了讨论
C++中的比率操作|套装1(算术)
在本文中，讨论了口粮的比较。
1. ratio_equal ：-此模板别名检查其参数中的比率是否相等。如果相等，则返回true，否则返回false。它返回一个布尔成员常量“ value” 。
1. ratio_not_equal ：-这个模板别名检查其参数中的比率是否不相等。如果不相等，则返回true；否则，则返回false。它返回一个布尔成员常量“ value” 。
// C++ code to demonstrate the working of
// ratio_equal and ratio_not_equal
#include
#include // for ratio manipulation
using namespace std;
int main()
{
// Declaring ratios
typedef ratio<10, 100> ratio1;
typedef ratio<1, 10> ratio2;
// Checking if ratios are equal using ratio_equal
ratio_equal::value ?
cout << "Ratios are equal" :
cout << "Ratios are not equal";
cout << endl;
// Checking if ratios are not equal using ratio_not_equal
ratio_not_equal::value ?
cout << "Ratios are not equal" :
cout << "Ratios are equal";
return 0;
}
输出：
Ratios are equal
Ratios are equal
3. ratio_greater ：-此临时别名检查ratio1是否大于ratio2 。它返回一个布尔成员常量“值” ，如果ratio1大于ratio2，则返回true，否则返回false。
4. ratio_less ：-此临时别名检查ratio1是否小于ratio2 。它返回一个布尔成员常量“值” ，如果ratio1小于ratio2，则返回true，否则返回false。
// C++ code to demonstrate the working of
// ratio_greater and ratio_less
#include
#include // for ratio manipulation
using namespace std;
int main()
{
// Declaring ratios
typedef ratio<10, 100> ratio1;
typedef ratio<11, 100> ratio2;
// Checking if ratio1 is greater than ratio2
// using ratio_greater
ratio_greater::value ?
cout << "ratio1 is greater than ratio2" :
cout << "ratio1 is not greater than ratio2";
cout << endl;
// Checking if ratio1 is less than ratio2
// using ratio_less
ratio_less::value ?
cout << "ratio1 is less than ratio2" :
cout << "ratio1 is not less than ratio2";
cout << endl;
return 0;
}
输出：
ratio1 is not greater than ratio2
ratio1 is less than ratio2
5. ratio_greater_equal ：-此临时别名检查ratio1是否大于或等于ratio2 。它返回一个布尔成员常量“值” ，如果ratio1大于或等于ratio2，则返回true，否则返回false。
6. ratio_less_equal ：-此临时别名检查ratio1是否小于或等于ratio2 。它返回一个布尔成员常量“值” ，如果ratio1小于或等于ratio2，则返回true，否则返回false。
// C++ code to demonstrate the working of
// ratio_greater_equal and ratio_less_equal
#include
#include // for ratio manipulation
using namespace std;
int main()
{
// Declaring ratios
typedef ratio<10, 100> ratio1;
typedef ratio<1, 10> ratio2;
// Checking if ratio1 is greater or equal than ratio2
// using ratio_greater_equal
ratio_greater_equal::value ?
cout << "ratio1 is greater or equal than ratio2" :
cout << "ratio1 is not greater or equal than ratio2";
cout << endl;
// Checking if ratio1 is less or equal than ratio2
// using ratio_less_equal
ratio_less_equal::value ?
cout << "ratio1 is less or equal than ratio2" :
cout << "ratio1 is not less or equal than ratio2";
cout << endl;
return 0;
}
输出：
ratio1 is greater or equal than ratio2
ratio1 is less or equal than ratio2
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