C ++ fmax()函数 (C++ fmax() function)

fmax() function is a library function of cmath header, it is used to find the maximum value of the given numbers, it accepts two number and returns the larger one.

fmax()函数是cmath标头的库函数，用于查找给定数字的最大值，它接受两个数字并返回较大的一个。

Syntax of fmax() function:

fmax()函数的语法：

    fmax(x, y);

Parameter(s): x, y – are the numbers to be used to find the larger value.

参数： x，y –是用于查找较大值的数字。

Return value: double – it returns double value that is the larger value of x and y.

返回值： double-返回x和y中的较大值的double值。

Example:

例：

    Input:
float x = 20;
float y = 10;
Function call:
fmax(x,y);
Output:
20

C ++代码演示fmax()函数的示例 (C++ code to demonstrate the example of fmax() function)

// C++ code to demonstrate the example of 
// fmax() function
#include <iostream>
#include <cmath>
using namespace std;
// main() section
int main()
{
float x;
float y;
float result;
//input the numbers
cout<<"Enter first number : ";
cin>>x;
cout<<"Enter second number: ";
cin>>y;
//finding the maximum number
result = fmax(x,y);
cout<<"fmax("<<x<<","<<y<<"): "<<result;
cout<<endl;
return 0;
}

Output

输出量

First run:
Enter first number : 10
Enter second number: -20 
fmax(10,-20): 10 
Second run:
Enter first number : 10
Enter second number: 20
fmax(10,20): 20
Third run:
Enter first number : 123.90
Enter second number: 121.88
fmax(123.9,121.88): 123.9 
Fourth run:
Enter first number : -123.45 
Enter second number: -121.56 
fmax(-123.45,-121.56): -121.56

翻译自: https://www.includehelp.com/cpp-tutorial/fmax-function-with-example.aspx