Answered: r: expected ';' before 'z1' error:…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Related questions

Concept explainers

Question

PLEASE HELP ME FIX THE FOLLOWING ERRORS!

error: 'Complex' was not declared in this scope

error: expected ';' before 'z1'

error: expected ';' before 'z2'

error: expected ';' before 'z3'

error: expected ';' before 'z4'

error: expected ';' before 'z5'

error: expected ';' before 'z6'

error: expected ';' before 'z7'

#include <iostream>

#include "complex.h"

#include <cstdlib>

using namespace std;

int main(int argc, char **argv)

{

Complex z0(3.6,4.8);

Complex z1(4,-2);

Complex z2(-4,2);

Complex z3(-4,-3);

Complex z4(3,-4);

Complex z5;

Complex z6;

Complex z7;

double ang;

cout<<"z0 = "<<z0<<" and re(z0) = "<<z0.getReal()<<" and "

<<"im(z0) = "<<z0.getImag()<<"."<<endl;

cout<<"z1 = "<<z1<<endl;

cout<<"z2 = "<<z2<<endl;

cout<<"z3 = "<<z3<<endl;

cout<<"z4 = "<<z4<<endl;

cout<<"z2 x z3 = "<<z2*z3<<endl;

cout<<"z1 + z2 = "<<z1+z2<<endl;

cout<<"z3 = "<<z3<<endl;

cout<<"z4 = "<<z4<<endl;

cout<<"z3-z4 = "<<z3-z4<<endl;

cout<<"((z2+z3)x(z3-z4)) = ";

cout<<(z2+z3)*(z3-z4)<<endl;

cout<<"z1^3 = "<<pow(z1,3)<<endl;

cout<<"1/z2^2 = "<<pow(z2,-2)<<endl;

cout<<"z3^0 = "<<pow(z3,0)<<endl;

try

{

cout<<"((z2+z3)x(z3-z4))/z3 = ";

z6 = ((z2+z3)*(z3-z4))/z3;

cout<<z6<<endl;

cout<<"z3 / z4 = "<<(z3/z4)<<endl;

cout<<"Conj(z4) = "<<z4.conjugate()<<endl;

cout<<"The real part of the conjugate of z4 is "<<(z4.conjugate()).getReal()<<endl;

cout<<"The imaginary part of the conjugate of z4 is "<<(z4.conjugate()).getImag()<<endl;

cout<<"The argument of the conjugate of z4 is "<<(z4.conjugate()).argument()<<"."<<endl;

cout<<"The modulus of the conjugate of z4 is "<<(z4.conjugate()).modulus()<<"."<<endl;

cout<<"(z3*conj(z4))/(z4*conj(z4))= ";

cout<<(z3*z4.conjugate())/(z4*z4.conjugate())<<endl;

complex<double>result = ((z1-z2) * (z3/z4)) / (z4/z3);

cout<<"result = "<<result<<endl;

ang = (z1+z2).argument();

cout<<"angle = "<<ang<<endl;

/* The result of the expression is the angle between z1-z2 and z3/z4, divided by the angle between z4/z3 and the x-axis.

}

catch(int e)

{

if (e == -1)

cerr<<"DivideByZero Exception in / operator"<<endl;

else if (e == -2)

cerr<<"DivideByZero Exception in argument function"<<endl;

}

return 0;

}

Expert Solution

Step 1

The errors in your code seem to indicate that the compiler cannot find the definition of the Complex class. here This could be due to a few possible reasons errors:

You are missing the header file that defines the Complex class. Check to make sure that you have included the correct header file for the Complex class.

The Complex class is defined in a namespace, but you are not specifying the namespace when you declare an instance of the Complex class. You should add the namespace qualifier to the declaration of the Complex objects, like this:

my_namespace::Complex z0(3.6,4.8);

You may be missing a semicolon (;) at the end of a previous line, which is causing the compiler to interpret the following line as part of the previous line. Check to make sure that all lines end with a semicolon.
It seems like the Complex class is not defined in the code snippet provided. Please make sure that the complex.h header file includes the definition of the Complex class.

Here are some additional comments on the error messages you received:

error: 'Complex' was not declared in this scope: This error message indicates that the Complex class is not recognized by the compiler. Make sure that the complex.h header file includes the definition of the Complex class and that it is properly included in your program.

error: expected ';' before 'z1': This error message indicates that there is a syntax error in your code. Check the previous line(s) of code for missing semicolons or other syntax errors.

To fix the errors in the code, you need to:

Include the necessary header files for the Complex class and pow function.
Declare the Complex objects z0 through z7.
Add semicolons at the end of the lines that declare z1 through z7.
Remove any non-ASCII characters (such as invisible tabs) from the code.

Here's an updated version of your code that should fix the errors:

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions