fdim()
函数fdim()函数是cmath标头的库函数,用于查找两个数字之间的正差,它接受两个数字并返回它们的正差。
fdim()
函数语法:
fdim(x, y);
参数: x,y –是要计算其正差的数字。
返回值: double-返回double值,它是数字x和y的正差。
示例
Input: float x = 20; float y = 10; Function call: fdim(x,y); Output: 10
fdim()
函数示例//示例 // fdim()功能 #include <iostream> #include <cmath> using namespace std; // main()部分 int main(){ float x; float y; float result; //输入数字 cout<<"Enter first number : "; cin>>x; cout<<"Enter second number: "; cin>>y; //找到积极的区别 result = fdim(x,y); cout<<"fdim("<<x<<","<<y<<"): "<<result; cout<<endl; return 0; }
输出结果
First run: Enter first number : 10 Enter second number: 20 fdim(10,20): 0 Second run: Enter first number : 20 Enter second number: 10 fdim(20,10): 10 Third run: Enter first number : -10.1234 Enter second number: -20.1231 fdim(-10.1234,-20.1231): 9.9997 Fourth run: Enter first number : -20.1231 Enter second number: -10.1234 fdim(-20.1231,-10.1234): 0