floating point - C++ using float numbers, functions not calculating valid data -

writing class rectangle assignment create class rectangle attributes length , width, each of defaults 1. provide member functions calculate perimeter , area of rectangle. also, provide set , functions length , width attributes. set functions should verify length , width each floating-point numbers larger 0.0 , less 20.0.;

the code executes, output incorrect. functions must not calling correctly.

example of output

>the first objects information >the length 1  >the width 1 >the perimeter -1.07374e+08 area -1.07374e+08  >the second objects information    >the length -1.07374e+08 >the width -1.07374e+08  >the perimeter -1.07374e+08  >the area -1.07374e+08 

header file

#ifndef rectangle_h #define rectangle_h class rectangle { public:     rectangle();     rectangle(float length);     rectangle(float length, float width);     ~rectangle();     float setlengthandwidth(float, float);     float setlength(float length);     float setwidth(float width);     float calculateperimeter();     float calculatearea();     void printinfo();     float getlength();     float getwidth(); private:     float length;     float width;     float area;     float perimeter; }; #endif#pragma once 

main file

#include <iostream> #include <iomanip> #include <cmath> #include "rectangle.h" using namespace std; int main() {     rectangle objectone;     rectangle objecttwo(7.1, 3.2);     rectangle objectthree(6.3);     rectangle objectfour(200, 300);     rectangle objectfive = objecttwo;     cout << "the first objects information is\n  ";     objectone.printinfo();     cout << "the second objects information is\n  ";     objecttwo.printinfo();     cout << "the third objects information is\n  ";     objectthree.printinfo();     cout << "the fourth objects information is\n  ";     objectfour.printinfo();     cout << "the fifth objects information is\n  ";     objectfive.printinfo(); } 

member .cpp file

#include <iostream> #include <iomanip> #include <cmath> #include "rectangle.h" using namespace std; rectangle::rectangle() {     length = width = 1.0; } rectangle::rectangle(float length) {     setlengthandwidth(length, 1.0); } rectangle::rectangle(float length, float width) {     setlengthandwidth(length, width); } float rectangle::setlengthandwidth(float len, float wid) {     setlength(len);     setwidth(wid); } float rectangle::setlength(float length) {     if (length >= 0 || length <= 20.0)         length = length;     else         length = 1.0; } float rectangle::setwidth(float width) {     if (width >= 0 || width <= 20.0)         width = width;     else         width = 1.0; } float rectangle::calculateperimeter() {     perimeter = (length * 2) + (width * 2) ;     return perimeter; } float rectangle::calculatearea() {     area = length * width;     return area; } float rectangle::getlength() {     cout << "please enter length" << endl;     cin >> length;         return length; } float rectangle::getwidth() {     cout << "please enter width" << endl;     cin >> width;     return width; }  void rectangle::printinfo() {     cout << "the length " << length << endl << "the width " << width << endl;     cout << "the perimeter " << perimeter << endl << "the area " << area << endl;  } rectangle::~rectangle() {     cout << "the object has gone out of scope. "; } 

your setlength() member doesn't set this->length, , setwidth(). set parameter, has no permanent effect.