Need advice on some actual evaluations converting measurement systems

[jklx22]

Now I have done the first two parts but I am stuck on the last 3 parts of the problem. Here is the description of this problem Among many measurement systems two of them seem to be the most widespread: metric and imperial. To make the story simpler we
assume that the first one uses "meter" as an only unit (expressed as a real number) while the second uses "foot" (always integer) and
"inch" (real number).
Your task is to write a simple "measurements converter". We want it to perform the following actions:
first, it should ask the user which system she/he uses to input data; we assume that 0 means "metric" and 1 means "imperial"
depending on a user's answer, the program should ask either for meters or feet and inches
next, the program should output the distance in proper (different) units: either in feet and inches or in meters
result outputted as metric should look like 123.4m
result printed as imperial should look like 12'3.5" Need help on those last 3 thank you.

  

#include "stdafx.h"
#include <iostream>
using namespace std;

int main(void)
{
	int sys;
	float m, ft, in;

	// Insert your code here 

	cout << "Enter 0 for metric or enter 1 for imperial." << endl;
	cin >> sys;

	if (sys == 0)
	{

		cout << "You have selected the metric system put meters: " << endl;
		cin >> m;

	}

	else if (sys == 1)
	{
		cout << "You have selected the imperial system " << endl;
		cout << "First put foot: " << endl;
		cin >> ft;
		cout << "Next put in integer: " << endl;
		cin >> in;
	}




	return 0;
}

[jonnin]

Dividing total inches as integer (or just drop the fractional part) gets you the feet part. Modulo (or fmod) gets you the remaining inches.

[jklx22]

Should I put them separately inside the else if loop for else if (sys==1) ? and how do I exactly output them combine them as strings ? Thus the output should be the following for any of them result outputted as metric should look like 123.4m
result printed as imperial should look like 12'3.5"

[jonnin]

you can do it with a cout statement...

cout << "words " << totalfeet << "'" <<totalinches << "\"" << endl;

or
cout << "words " << decimalmeters << "m" << endl;

your code is a little weird, you say to input integers but the variables are floats.

[jklx22]

I am following the program its based on a lab that's how they give it to me its already made. If you are familiar with the C++ institute program of course that's how they give it to me

[jklx22]

Also how to you implement this * Dividing total inches as integer (or just drop the fractional part) gets you the feet part. Modulo (or fmod) gets you the remaining inches. Like do I just put it inside the loop ? I will try to figure it out

[jonnin]

you can cast to interger

double d = 3.14;
(int)d is 3.0

mod is %

x = a %(int)d; the remainder when a is divided by d.

fmod is almost the same as % for floats. Read this one online.

13%12 = 1
13/12 = 1
1 foot, 1 inch...

[jklx22]

What are you trying to say here ?

double d = 3.14;
(int)d is 3.0

mod is %

x = a %(int)d; the remainder when a is divided by d.

fmod is almost the same as % for floats. Read this one online.

13%12 = 1
13/12 = 1
1 foot, 1 inch...

All the variables are floats I have to do the second uses "foot" (always integer) and
"inch" (real number). What you put as a anwser does not make any sense and makes it more confusing then clearing it up.

[jklx22]

cout << "words " << totalfeet << "'" <<totalinches << "\"" << endl;

or
cout << "words " << decimalmeters << "m" << endl;

How is this going to put out this

Example Input: 1 , 0 , 1
Example Output: 0.0254m

Example Input: 0 , 0.0254
Example Output: 0'1"

And keep it in mind I have to use this code template they give me

#include <iostream>
using namespace std;
int main(void) {
int sys;
float m, ft, in;
// Insert your code here
return 0;
}

That means I cant put other stuff

[jklx22]

Can anybody help me here ?

[gunnerfunner]

#include <iostream>
#include <cmath>//std::floor, std::round
#include <iomanip>//std::fixed, std::setprecision
#include <utility>//std::move

auto constexpr METER_FEET = 3.2808;
auto constexpr FEET_INCH = 12;
auto constexpr INCH_METER = 0.0254;

struct Imperial;//forward declaration

struct Metric
{
    float m_meter;
    Metric (float meter) {m_meter = std::move(meter);}
    //can also use member initializer list or assignment instead of move semantics
    Metric(Imperial imp);
};
std::ostream& operator << (std::ostream& os, const Metric& m)//for printing
{
    os << std::fixed << std::setprecision(2) << m.m_meter << "m"; return os;
}
struct Imperial
{
    int m_foot;
    float m_inch;
    Imperial(int foot, float inch) {m_foot = std::move(foot); m_inch = std::move(inch);}
    Imperial(Metric m);
};
std::ostream& operator << (std::ostream& os, const Imperial& imp)
{
    os << imp.m_foot << "'" ;
    os << imp.m_inch << "''";
    return os;
}
Metric::Metric(Imperial imp)
{
        m_meter = (imp.m_foot * FEET_INCH + imp.m_inch) * (INCH_METER);
}
Imperial::Imperial(Metric m)
{
    float totalFeet = METER_FEET * m.m_meter;
    m_foot = std::floor (totalFeet);
    m_inch = std::round((totalFeet - m_foot) * FEET_INCH);
}
int main()
{
    Metric m{8.9};
    Imperial imp{std::move(m)};//moved objects in valid but unspecified state
    //http://stackoverflow.com/questions/7930105/does-moving-leave-the-object-in-a-usable-state
    std::cout << imp << "\n";
    std::cout << imp.m_inch << "\n";

    Imperial pmi{29, 2};
    Metric mm{std::move(pmi)};
    std::cout << mm << "\n";

}

http://coliru.stacked-crooked.com/a/1006e8cab17ab33f

[jklx22]

Thanks

[jklx22]

Thanks great