In c 1 Write a program using the following function headers

In c++

Write a program using the following function headers:

double getLength();

double getWidth();

double getArea(double len, double wid);

void displayData(double len, double wid, double area);

Write function main which calls these four functions. Make sure that the length and width are positive numbers.

Hand in 2 runs showing valid and invalid data.

Write the function calls for the following headers and prototypes:

a.void showValue(int quantity)

b.void display(int arg1, double arg2, char arg3); pass the following to the call: int age; double income; char initial

c.double calPay(int hours, double rate);

// Question 1
// C++ code determine rectange area

#include <iostream>
#include <string.h>
#include <fstream>
#include <limits.h>
#include <stdlib.h>
#include <math.h>
#include <iomanip>
#include <stdlib.h>
#include <vector>

using namespace std;

double getLength()
{
double len;
while(true)
{
cout << \"Enter length: \";
cin >> len;

if(len > 0)
break;
else
cout << \"Invalid Input, length should be positive.\ \";
}
return len;
}

double getWidth ()
{
double wid;
while(true)
{
cout << \"Enter width: \";
cin >> wid;

if(wid > 0)
break;
else
cout << \"Invalid Input, width should be positive.\ \";
}
return wid;
}

double getArea(double len, double wid)
{
double area = len*wid;
return area;
}

void displayData(double len, double wid, double area)
{
cout << \"Length: \" << len << endl;
cout << \"Width: \" << wid << endl;
cout << \"Area: \" << area << endl;
}

int main()
{
double length,width;
double area;

length = getLength();
width = getWidth();
area = getArea(width, length);
displayData(length, width, area);

return 0;
}

/*
output:

Enter length: 12
Enter width: 3
Length: 12
Width: 3
Area: 36

Enter length: -2
Invalid Input, length should be positive.
Enter length: 3
Enter width: -4
Invalid Input, width should be positive.
Enter width: 0
Invalid Input, width should be positive.
Enter width: 3
Length: 3
Width: 3
Area: 9

// Question 2
// C++ code

#include <iostream>
#include <string.h>
#include <fstream>
#include <limits.h>
#include <stdlib.h>
#include <math.h>
#include <iomanip>
#include <stdlib.h>
#include <vector>

using namespace std;

void showValue(int quantity)
{
cout << \"Quantity: \" << quantity << endl;
}

double calPay(int hours, double rate)
{
return hours*rate;
}

void display(int arg1, double arg2, char arg3)
{
cout << \"Age: \" << arg1 << endl;
cout << \"Income: \" << arg2 << endl;
cout << \"Initials: \" << arg3 << endl;

}

int main()
{
int quantity,age;
double income;
char initial;

quantity = 10;
age = 53;
initial = \'C\';

showValue(quantity);

int hours = 12;
double rate = 100;
income = calPay(hours,rate);

display(age,income,initial);

return 0;
}

/*
output:

Quantity: 10
Age: 53
Income: 1200
Initials: C