Question

C++ PROGRAM

Write a program that converts from 24-hour notation to 12-hour notation. For example, it should convert 14:25 to 2:25 PM. The input is given as two integers. There should be at least three functions, one for input, one to do the conversion, and two for output (one for 12-hour time and another for 24-hour time). Record the AM/PM information as a value of type char, ‘A’ for AM and ‘P’ for PM. Thus, the function for doing the conversions will have a call-by-reference formal parameter of type char to record whether it is AM or PM. (The function will have other parameters as well.) Include a loop that lets the user repeat this computation for new input values again and again until the user says he or she wants to end the program.

Each iteration of the loop will process 3 inputs:

1. Hour of current time
2. Minute of current time
3. Whether or not to continue the loop

You mustimplement 4 functions. You are notpermitted to change the name or signature of these functions; the testing framework is going to directly call the functions. The three functions and their signatures are (use the signatures as a hint for how to implement this!):

1. get_input(int &hour, int &minute)- function sets the hour and minute based on user input
2. convert_to_12_hour(int &hour, char &am_pm);- function converts the hour to 12-hour notation and sets AM/PM
3. print_24_hour_time(int hour, int minute)- function outputs the 24-hour time.
4. print_12_hour_time(int hour, int minute, char am_pm)- function outputs the 12-hour time.

Sample execution:

Enter the hour in 24-hour format: 9
Enter the minute in 24-hour format: 13
The time in 24-hour format is 09:13
The time in 12-hour format is 09:13AM
Continue? (y/n): y

Enter the hour in 24-hour format: 12
Enter the minute in 24-hour format: 55
The time in 24-hour format is 12:55
The time in 12-hour format is 12:55PM
Continue? (y/n): y

Enter the hour in 24-hour format: 14
Enter the minute in 24-hour format: 05
The time in 24-hour format is 14:05
The time in 12-hour format is 02:05PM
Continue? (y/n): n

Answer 1

/****************************time.cpp**************************************/

#include <iostream>
using namespace std;

void get_input(int &hour, int &minute);
void convert_to_12_hour(int &hour, char &am_pm);
void print_24_hour_time(int hour, int minute);
void print_12_hour_time(int hour, int minute, char am_pm);
int main()
{
//variable declaration
int hour, minute;//stroe hours and minutes
char am_pm; //store am or pm
char op; //store option that user want to continue or not
do
{
//calling functions
get_input(hour, minute);
print_24_hour_time(hour, minute);
convert_to_12_hour(hour, am_pm);
print_12_hour_time(hour, minute, am_pm);
  
cout << endl << "Continue? (y/n): ";
cin >> op;
}
while(op == 'y' || op == 'Y');
  
return 0;
}

void get_input(int& hours, int& minutes)
{
do
{
cout << "Enter the hour in 24-hour format: ";
cin >> hours;
if(hours > 23) cout << "Please enter a value between 0 and 23" << endl;
}
while(hours > 23);
  
do
{
cout << "Enter the minute in 24-hour format: ";
cin >> minutes;
if(minutes > 59) cout << "Please enter a value between 0 and 59" << endl;
}
while(minutes > 59);
}

void convert_to_12_hour(int& hours, char& am_pm)
{
  
if(hours > 12)
{
hours = hours - 12;
am_pm = 'P';
}
else if(hours == 12){
  
am_pm = 'P';
}
else
am_pm = 'A';
}

void print_24_hour_time(int hours, int minutes){
//add 0 before 0-9
if(hours<10&&minutes < 10)
cout <<"The time in 24-hour format is 0"<< hours << ":0" << minutes;
else if(hours<10)
cout <<"The time in 24-hour format is 0"<< hours << ":" << minutes;
else if(minutes<10)
cout <<"The time in 24-hour format is "<< hours << ":0" << minutes;
else
cout <<"The time in 24-hour format is "<< hours << ":" << minutes;
  
}
void print_12_hour_time(int hour, int minute, char am_pm)
{
cout<<endl;
if(am_pm == 'P')
{
//add 0 before 0-9
if(hour<10&&minute < 10)
cout <<"The time in 12-hour format is 0"<< hour << ":0" << minute << " PM";
else if(hour<10)
cout <<"The time in 12-hour format is 0"<< hour << ":" << minute << " PM";
else if(minute<10)
cout <<"The time in 12-hour format is "<< hour << ":0" << minute << " PM";
else
cout <<"The time in 12-hour format is "<< hour << ":" << minute << " PM";
}
else
{
if(hour<10&&minute < 10)
cout <<"The time in 12-hour format is 0"<< hour << ":0" << minute << " AM";
else if(hour<10)
cout <<"The time in 12-hour format is 0"<< hour << ":" << minute << " AM";
else if(minute<10)
cout <<"The time in 12-hour format is "<< hour << ":0" << minute << " AM";
else
cout <<"The time in 12-hour format is "<< hour << ":" << minute << " AM";
}
}

/********************************************output**************************************/

Enter the hour in 24-hour format: 14
Enter the minute in 24-hour format: 05
The time in 24-hour format is 14:05
The time in 12-hour format is 02:05 PM
Continue? (y/n): y
Enter the hour in 24-hour format: 11
Enter the minute in 24-hour format: 5
The time in 24-hour format is 11:05
The time in 12-hour format is 11:05 AM
Continue? (y/n): n

Thanks a lot, Please let me know if you have any problem......................