Question

on a math game you will ask the student 10 questions (addition and subtraction only). If the student gets at least 1 question wrong the game keep going until his percent of correct answer reaches 80% or he he got 25 questions. the questions should be personalized. If the student got an addition question wrong the next question should be addition and vice versa.

It needs to be done in Java. And a while loop needs to be used on the additional questions. Thanks

Answer 1

CODE :-

import java.util.*; public class B1304 { public static void main(String[] args) { Scanner sc=new Scanner(System.in); Random r=new Random(); int a=0,b=0;// these are the two input variable. int i=1;//i variable is used for keeping the track of number of questions. int count=0;//count variable for counting number of correct answer. int flag=0;//flag variable for keeping the track of whether to do addition or //subtraction. System.out.println("******* MATH GAME *******"); while(i<=10) { //I am generating the numbers randomly within the range of 0 to 100. a=r.nextInt(100); b=r.nextInt(100); //if flag=0, than it should be addition. //if flag=1, than it should be subtraction. if(flag==0) { System.out.print("Question "+i+": "+a+"+"+b+"="); int res=sc.nextInt(); if(a+b==res) { count++; flag=1; } } else { System.out.print("Question "+i+": "+a+"-"+b+"="); int res=sc.nextInt(); if(a-b==res) { count++; flag=0; } } i++; } //if all the questions are answered correctly than exit, if not than continue //the game. if(count==10) { System.out.println("!!!!GAME OVER!!!!"); System.out.println("CONGRATULATIONS YOU HAVE ANSWERED ALL THE QUESTIONS CORRECTLY"); } else { //the bellow loop will run until the player scores 80% or the no. of //questions reach 25. while(i<=25) { if((int)(((double)count/25)*100)==80) { break; } a=r.nextInt(100); b=r.nextInt(100); if(flag==0) { System.out.print("Question "+i+": "+a+"+"+b+"="); int res=sc.nextInt(); if(a+b==res) { count++; flag=1; } } else { System.out.print("Question "+i+": "+a+"-"+b+"="); int res=sc.nextInt(); if(a-b==res) { count++; flag=0; } } i++; System.out.println("Per="+(int)(((double)count/25)*100)+"%"); } System.out.println("!!!!GAME OVER!!!!"); } } }

OUTPUT :-