Question

Below is my code, Replace the 2 static_cast codes to a simpler C++ code. I would like to find another way to compile the program without using static_cast in my code. Thank you

#include <iostream>
#include <iomanip>
using namespace std;

class Population
{
private:
int population,
birth,
death;

public:
Population()
{
population = 2;
birth = 0;
death = 0;
}
Population(int x, int y, int z)
{
if (x < 2)
population = 0;
else
population = x;


if (y < 0)
birth = 0;
else
birth = y;


if (z < 0)
death = 0;
else
death = z;
}
void setPopulation(int x)
{
if (x < 2)
population = 0;
else
population = x;
}


void setBirth(int y)
{
if (y < 0)
birth = 0;
else
birth = y;
}


void setDeath(int z)
{
if (z < 0)
death = 0;
else
death = z;
}


double getBirth()
{
return static_cast<double>(birth) / population;
}
double getDeath()
{
return static_cast<double>(death) / population;
}
};


int main()
{
int population, birth, death;

cout << "What is the starting population: ";
cin >> population;

cout << "What is the amount of births: ";
cin >> birth;
cout << "What is the amount of deaths: ";
cin >> death;
Population place1(population, birth, death);


cout << fixed << setprecision(2);



cout << endl << "Birth rate is " << place1.getBirth() << endl;
cout << "Death rate is " << place1.getDeath() << endl;


return 0;
}

Answer 1

#include <iostream>
#include <iomanip>
using namespace std;

class Population
{
private:
int population,
birth,
death;

public:
Population()
{
population = 2;
birth = 0;
death = 0;
}
Population(int x, int y, int z)
{
if (x < 2)
population = 0;
else
population = x;

if (y < 0)
birth = 0;
else
birth = y;

if (z < 0)
death = 0;
else
death = z;
}
void setPopulation(int x)
{
if (x < 2)
population = 0;
else
population = x;
}

void setBirth(int y)
{
if (y < 0)
birth = 0;
else
birth = y;
}

void setDeath(int z)
{
if (z < 0)
death = 0;
else
death = z;
}

double getBirth()
{
// mulitply with double number so that it will be converted into double
return (birth *1.0) / population;
}
double getDeath()
{
// mulitply with double number so that it will be converted into double
return (death*1.0) / population;
}
};

int main()
{
int population, birth, death;

cout << "What is the starting population: ";
cin >> population;

cout << "What is the amount of births: ";
cin >> birth;
cout << "What is the amount of deaths: ";
cin >> death;
Population place1(population, birth, death);

cout << fixed << setprecision(2);

cout << endl << "Birth rate is " << place1.getBirth() << endl;
cout << "Death rate is " << place1.getDeath() << endl;

return 0;
}

Note : Please comment below if you have concerns. I am here to help you

If you like my answer please rate and help me it is very Imp for me