C语言中Real表示什么意思

Real 是实数的意思。

在复数里，real 表示取实部函数。

应当用小写

#include

#include

int main( )

{

using namespace std;

complex c1 ( 4.0 , 3.0 ); // c1 是复数

cout << "The complex number c1 = " << c1 << endl;

double dr1 = real ( c1 ); // 取c1的实部

cout << "The real part of c1 is real ( c1 ) = "

<< dr1 << "." << endl;

double di1 = imag ( c1 ); // 取c1的虚部

cout << "The imaginary part of c1 is imag ( c1 ) = "

<< di1 << "." << endl;

}

上面程序 输出

The complex number c1 = (4,3)

The real part of c1 is real ( c1 ) = 4.

The imaginary part of c1 is imag ( c1 ) = 3.

标签：C语言,Real