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CSC 190 Lecture Notes - Lecture 8: Dime (United States Coin), American Broadcasting Company

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bleachonthbeach
15 Apr 2020
School
EKU, Eastern
Department
CSC—Computer Science
Course
CSC 190
Professor
Lan Kong

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Document Summary

//purpose: take an amount like . 38 and print the minimum number of coins. //3 + 1 + 1 + 3 = 8 coins (called the change program) import java. util. scanner; public class p0128a { public static void main(string[] args) { Scanner in = new scanner(system. in); double amount; //input int d, q, di, n, p, total; int cents; //purpose: +, -, *, / on two rational numbers. //n1/d1 + n2/d2 = n1*d2/(d1*d2) + n2*d1/(d1*d2) = (n1*d2+n2*d1)/(d1*d2) //1/2 / 2/3 = 1/2 * 3/2 = 3/4 import java. util. scanner; public class p0128b { public static void main(string[] args) { Scanner in = new scanner(system. in); int n1, d1, n2, d2; //input int n3, d3; //output. System. out. print("enter denominator 2: "); d2 = in. nextint(); n3 = n1*d2+n2*d1; d3 = d1*d2; System. out. println(n1+"/"+d1+" + "+n2+"/"+d2+" = "+n3+"/"+d3); n3 = n1*d2-n2*d1; d3 = d1*d2; System. out. println(n1+"/"+d1+" - "+n2+"/"+d2+" = "+n3+"/"+d3); n3 = n1*n2; d3 = d1*d2; System. out. println(n1+"/"+d1+" * "+n2+"/"+d2+" = "+n3+"/"+d3); n3 = n1*d2; d3 = d1*n2;

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Related Questions

5. Consider the following class: import java.util.Scanner; public class Money private int dollars; private int cents; public Money (int d, int c) { dollars = d; cents = c; /* Point 1 */ public String toString() { String result; if (cents > 100) int totalCents = dollars * 100 + cents; dollars = totalCents / 100; cents = total Cents % 100; /* Point 2 */ /* Point 3 */ result = "$" + dollars + ", " + cents + "C"; return result; public static void main(String[] yourGrandfather) Scanner keyboard - new Scanner (System.in); Money amount; int C; /* Point 4 */ System.out.print("Enter an amount in cents: "); C = keyboard.nextInt (); amount = new Money (c/ 100, CX 100); System.out.println("You have: " + amount.toString()); The above program compiles and runs without error. Which variables are in scope at each of the points marked by comments in the above class? In other words, if each of these comments were replaced by an actual Java statement, which variables could be used in this statement without a prefix (that is, without having to write the name of a class or other variable in front of the variable name) and without the compiler reporting an unknown variable error? List each variable that is in scope at each of the points marked by comments in the above class, and indicate whether it is an instance variable, a formal parameter, or a local variable. Note that you will be penalized for every variable that is out of scope at a given point but that you list as being in scope at that point.