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arg() function for Complex Number in C++
A complex number is a number that is expressed in the form of a + bi, where a and b are real numbers. i is the imaginary part of number.
The argument is the angle between the positive axis and the vector of the complex number. For a complex number
z = x + iy denoted by arg(z),
For finding the argument of a complex number there is a function named arg() of a complex number in the complex header file.
Syntax
arg(complex_number);
Parameter
The function accepts a complex number as input to calculate the value of the argument for that complex number.
Returned value
The function returns the argument of the complex number.
Example
#include<iostream>
#include<complex.h>
using namespace std;
int main (){
double a = 12.0, b = 56.0;
complex<double> complexnumber (a, b);
cout<<"The argument of complex number "<<a<<" + i"<<b<< " is: ";
cout<<arg(complexnumber)<<endl;
return 0;
}Output
The argument of complex number 12 + i56 is: 1.3597
Updated on: 24-Oct-2019
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