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I have been pretty good with this stuff...but this is the umteenth time I have run into this error. I have gone around it by just using the direct function in the code, but I really really want to master this function calling. My compilation error is always term does not evaluate to a function taking 1 (or two) arguements. Where am I going wrong? I did the current function that comes up with the error by the book. literally. Here is the code. The Error comes up at theAdd_num (N1_n,N2_n).

#include<iostream>

#include<cmath>

#include<math.h>

#include"Formulas.h"

double SQRT_NORM (double a);

using namespace std;

int main ()

{

bool again = false;

do

{

double N1, N2, N1_n, N2_n, Newz, Add_num, USR_SQRT;

char choice;

cout<<"Enter a first of two positive numbers:"<<endl;

cin>>N1;

N1=N1_n;

cout<<"Enter the second number of two positive numbers:"<<endl;

cin>>N2;

N2=N2_n;

Add_num (N1_n,N2_n);HERE IS WHERE THE ERROR IS REPORTED

SQRT_NORM (Newz);

cout<<"The Magnitude of the complex number is:"<<endl;

cout<< "\n Would you like to run the program again?";

cin>> choice;

if (choice == 'y')

{

again = true;

system ("cls");

}

else

again = false;

} while (again);

return 0;

}

//Below are the formulas used in this lab

double Add_num (double a, double b)

{

double Add_num;

Add_num = a+b;

return Add_num;

}

double SQRT_NORM (double a)

{

double SQRT_NORM;

SQRT_NORM = sqrt (a);

return SQRT_NORM;

}

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# C++ Function Calling

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