Answer:
I will code in Javascript.
Preconditions:
- The variable dollar is passed by parameter to the function.
function Dollars(dollar) {
//declare and initialize the variables.
var twenties = 0;
var tens = 0;
var fives = 0;
var ones = 0;
<em>//If dollar is greater or equals 20, divide dollar by 20 and save it into the variable twenties. Then, save the remainder into the variable dollar. </em>
if(dollar >= 20){
twenties = Math.floor(dollar/20);
dollar = dollar % 20;
}
<em>//If dollar is greater or equal 10, divide dollar by 10 and save it into the variable twenties. Then, save the remainder into the variable dollar. </em>
if(dollar>=10){
tens = Math.floor(dollar/10);
dollar = dollar % 10;
}
<em>//If dollar is greater or equal 5, divide dollar by 5 and save it into the variable twenties. Then, save the remainder into the variable dollar. </em>
if(dollar>=5){
fives = Math.floor(dollar/5);
dollar = dollar % 5;
}
<em> //If dollar is greater or equal 1, divide dollar by 1 and save it into the variable twenties. Then, save the remainder into the variable dollar.
</em>
if(dollar>=1){
ones = Math.floor(dollar/1);
dollar = dollar % 1;
}
//At this point, dollar is equal 0.It's time to display the conversion.
Console.log('20s :' + twenties);
Console.log('10s :' + tens);
Console.log('5s :' + fives);
Console.log('1s :' + ones);
}
Explanation:
The variable Math.floor(num) is used to round a number downward to its nearest integer.
For example, if dollar=57:
twenties = dollar/20 will be 57/20 = 2
dollar = dollar % 20 will be 57 % 20 = 17
tens = dollar/10 will be 17/10 = 1
dollar = dollar % 10 will be 17 % 10 = 7
fives = dollar/5 will be 7/5 = 1
dollar = dollar % 5 will be 7 % 5 = 2
ones = dollar/1 will be 2/1 = 2
dollar = dollar % 1 will be 0 % 5 = 0
