write a PHP program makes change for a given number of cents. The program should ask the user for the amount of cents and then output the change for specific denominations of ten dollar bills, five dollar bills, one dollar bills, quarters, dimes, nickels, and pennies.
Here is a sample program output for an input of 265 cents:
Change for 2 dollars and 65 cents :
0 ten dollar bills
0 five dollar bills
2 one dollar bills
2 quarters
1 dime
1 nicke
l 0 pennies
The PHP function readline can be used to get user input. The function can be used as follows: // prompt the user and store the result in the variable $input $input = readline (" Prompt ")
Explanation in the code is written in comments wherever needed.
Code:
<?php
$input = readline ("Enter amount in cents");
//$rem variable is used to calculate
$rem = $input;
//variables to store number of denominations
$dollarTen = 0; // Ten dollar is 1000 cents
$dollarFive = 0; // Five dollar is 500 cents
$dollarOne = 0; // One dollar is 100 cents
$quarters = 0; // One quarter is 25 cents
$dimes = 0; // One dime is 10 cents
$nickels = 0; // One nickel is 5 cents
$pennies = 0; // One penny is one cent
//floor() function is used to round down the nearest integer
value
if (is_numeric($rem)) {
//to find the number of ten dollar
if ($rem >= 1000) {
$dollarTen = floor($rem / 1000); //using floor to get remove
decimal values
$rem = $rem - ($dollarTen * 1000);
}
//to find the number of five dollar
if ($rem >= 500) {
$dollarFive = floor($rem / 500); //using floor to get remove
decimal values
$rem = $rem - ($dollarFive * 500);
}
//to find the number of one dollar
if ($rem >= 100) {
$dollarOne = floor($rem / 100); //using floor to get remove decimal
values
$rem = $rem - ($dollarOne * 100);
}
//to find the number of quarters
if ($rem >= 25) {
$quarters = floor($rem / 25); //using floor to get remove decimal
values
$rem = $rem - ($quarters * 25);
}
//to find the number of dimes
if ($rem >= 10) {
$dimes = floor($rem / 10); //using floor to get remove decimal
values
$rem = $rem - ($dimes * 10);
}
//to find the number of nickels
if ($rem >= 5) {
$nickels = floor($rem / 5); //using floor to get remove decimal
values
$rem = $rem - ($nickels * 5);
}
//remaining will be the number of the pennies
$pennies = $rem;
}
//calculating the values for the first line of output
$cents = $input % 100; //using modulus operator to find the number
of cents
$dollr = ($input - $cents) / 100; //to find the number of
dollars
//i have used '\n' for new line, '\r\n' or nl2br() can also be
used
echo "\nChange for ".$dollr." dollars and ".$cents." cents
:\n";
echo $dollarTen." ten dollar bills\n";
echo $dollarFive." five dollar bills\n";
echo $dollarOne." one dollar bills\n";
echo $quarters." quarters\n";
echo $dimes." dime\n";
echo $nickels." nickel\n";
echo $pennies." pennies";
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