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C++ Program Examples: Even/Odd, Digit Check, Astronaut Eligibility, Water Usage

The document contains code snippets from multiple C++ programs. Program 1 checks if a user-input number is even or odd. Program 2 checks if a user-input character is a digit. Program 3 checks if a user's attributes meet requirements to be an astronaut. Program 4 calculates water bill costs based on gallons used, providing a discount for the first 800 gallons.

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Ng Siewmin
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35 views11 pages

C++ Program Examples: Even/Odd, Digit Check, Astronaut Eligibility, Water Usage

The document contains code snippets from multiple C++ programs. Program 1 checks if a user-input number is even or odd. Program 2 checks if a user-input character is a digit. Program 3 checks if a user's attributes meet requirements to be an astronaut. Program 4 calculates water bill costs based on gallons used, providing a discount for the first 800 gallons.

Uploaded by

Ng Siewmin
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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PRACTICAL 5

PART B
QUESTION 1
INPUT
#include <iostream>
#include <iomanip>
using namespace std;

int main(void)
{
int num, even_num, odd_num;

cout << "Please enter a number:";


cin >> num;

if ((num % 2) == 0)
{
cout << num << " is an even number"<<endl;
}
else
{
cout << num << " is an odd number"<<endl;
}
return 0;
}

OR
OUTPUT
PART B
QUESTION 2
INPUT
#include <iostream>
#include <iomanip>
using namespace std;

bool isDigit(char ch);

int main(void)
{
char ch;
bool answer;

cout << "Please enter a input: ";


cin >> ch;
answer = isDigit(ch);

if (answer!=0)
{
cout << ch << " is a digit" << endl;
}
else
{
cout << ch << " is not a digit" << endl;
}
return 0;
}

bool isDigit(char ch)


{
return('0' <= ch && ch <= '9');
}

OUTPUT
PART B
QUESTION 3
INPUT
#include <iostream>
#include <iomanip>
using namespace std;

int main(void)
{
int age;
double weight;
char smoker;

cout << "Want to be an astronaut?\n";


cout << "Please answer the following questions: " << endl;
cout << "What is your age? ";
cin >> age;
cout << "What is your weight? ";
cin >> weight;
cout << "Are you a smoker (y or n)? ";
cin >> smoker;

if ((35 <= age <= 40) && (50.0 <= weight <= 80.0) && (smoker == 'n'))
{
cout << "Congraturation, we can accept you as an astronaut!"<<endl<<endl;
}
else
{
cout << "Sorry, we cannot accept you as an astronaut!"<<endl<<endl;
}
return 0;
}
OUTPUT
PART D
QUESTION 1
INPUT
#include <iostream>
#include <iomanip>
using namespace std;
#define CHARGE_PER_GALLONS 1000

int main(void)
{
double beginning, ending, gallon_used, total_cost;

cout << "Please enter how many gallons of water in the beginning? ";
cin >> beginning;
cout << "Please enter how many gallons of water in the ending? ";
cin >> ending;

gallon_used = ending - beginning;


cout << "The amount of water used is " << gallon_used;
cout << endl << endl;

if (gallon_used <= 800)


{
cout << "You will get 100% discount, Thank you for saving precious water
resource!\n\n";
}
else
{
total_cost = (((gallon_used - 800)/(CHARGE_PER_GALLONS))*(0.13));
cout << "You will get 100% discount for the first 800 gallons used,";
cout << "the balance you have to pay is RM "
<<fixed<<setprecision(2)<<total_cost;
}

return 0;
}

OR
OUTPUT

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