LANGUAGE IS JAVA CALCULATOR USING SCIENTIFIC/STANDARD MODE ERRORS: ADDITION AND DIVISION NOT WORKING FOR EITHER CALCULATOR...
LANGUAGE IS JAVA
CALCULATOR USING SCIENTIFIC/STANDARD MODE
ERRORS:
ADDITION AND DIVISION NOT WORKING FOR EITHER CALCULATOR
CODE:
import java.util.Scanner;
public class CalculatorProject {
public static void main (String[] args) {
Scanner yurr = new Scanner(System.in);
String mode;
double i;
String choice;
String answer = "Y";
while (answer.equals("Y")) {
System.out.println("Enter the calculator mode:
Standard/Scientific?");
mode = yurr.next();
if(mode.equals("Scientific")) {
System.out.print("Enter '+' for addition, '-' for subtractions, '*'
for multiplication, '/' for division, 'sin' for sin x, 'cos' for
cos x, 'tan' for tan x:");
System.out.println("Enter Choice: ");
choice = yurr.next();
switch(choice) {
case "+":
double results = 0.0, number= 0.0;
int x;
System.out.println("How many numbers do you want to add?");
x = yurr.nextInt();
System.out.println("Enter " + x + " numbers");
for ( i = 1.0; i <= x; i++) {
number = yurr.nextDouble();
results = results + number;
}
System.out.println("Result: " + results);
break;
case "-":
double results1 = 0.0, number1 = 0.0;
int x1;
System.out.println("How many numbers do you want to
subtract?");
x1 = yurr.nextInt();
System.out.println("Enter " + x1 + " numbers");
for ( i = 1.0; i <= x1 ; i++) {
number1 = yurr.nextDouble();
results1 = results1 - number1;
}
System.out.println("Result: " + results1);
break;
case "*":
double results2 = 1.0, number2=0.0;
int x2;
System.out.println("How many numbers do you want to
multiply?");
x2 = yurr.nextInt();
System.out.println("Enter " + x2 + " numbers");
for ( i = 1.0; i <= x2; i++) {
number2 = yurr.nextDouble();
results2 = results2 * number2;
}
System.out.println("Result: "+ results2);
break;
case "/":
double results3 = 1.0, number3 = 1.0;
int x3;
System.out.println("How many numbers do you want to
divide?");
x3 = yurr.nextInt();
System.out.println("Enter " + x3 + " numbers");
for ( i = 1.0; i <= x3 ; i++) {
number3 = yurr.nextDouble();
results3 = results3 / number3;
}
System.out.println("Result: " + results3);
break;
case "sin":
double radian;
System.out.println("Enter a number in radians to find the
sine");
radian = yurr.nextDouble();
System.out.println("Result: " + Math.sin(radian));
break;
case "cos":
double radian1;
System.out.println("Enter a number in radians to find the
cosine");
radian1 = yurr.nextDouble();
System.out.println("Result: " + Math.cos(radian1));
break;
case "tan":
double radian2;
System.out.println("Enter a number in radians to find the
tangent");
radian2 = yurr.nextDouble();
System.out.println("Result: " + Math.tan(radian2));
break;
case "e":
System.out.println("Invalid operation entered");
}
}
else if (mode.equals("Standard")) {
System.out.println("The calculator will operate in standard
mode.");
System.out.print("Enter '+' for addition, '-' for subtractions, '*'
for multiplication, '/' for division, 'sin' for sin x, 'cos' for
cos x, 'tan' for tan x:");
System.out.println("Enter Choice: ");
choice = yurr.next();
switch (choice) {
case "+":
double results7 = 0.0, number7=0.0;
int x7;
System.out.println("How many numbers do you want to add?");
x7 = yurr.nextInt();
System.out.println("Enter " + x7 + " numbers");
for ( i = 1.0; i <= x7; i++) {
number7 = yurr.nextDouble();
results7 += number7;
}
System.out.println("Result: " + results7);
break;
case "-":
double results4 = 0.0, number4=0.0;
int x4;
System.out.println("How many numbers do you want to
subtract?");
x4 = yurr.nextInt();
System.out.println("Enter " + x4 + " numbers");
for ( i = 1.0; i <= x4; i++) {
number4 = yurr.nextDouble();
results4 -= number4;
}
System.out.println("Result: " + results4);
break;
case "*":
double results5 = 1.0, number5=0.0;
int x5;
System.out.println("How many numbers do you want to
multiply?");
x5 = yurr.nextInt();
System.out.println("Enter " + x5 + " numbers");
for ( i = 1.0; i <= x5; i++) {
number5 = yurr.nextDouble();
results5 *= number5;
}
System.out.println("Result: " + results5);
break;
case "/":
double results6 = 1.0, number6=1.0;
int x6;
System.out.println("How many numbers do you want to
divide?");
x6 = yurr.nextInt();
System.out.println("Enter " + x6 + " numbers");
for ( i = 1.0; i <= x6 - 1.0; i++) {
number6 = yurr.nextDouble();
results6 /= number6;
}
System.out.println("Result: " + results6);
break;
}
}
else {
System.out.println("Invalid operation entered");
}
System.out.println("Do you want to start over? (Y/N)");
answer = yurr.next();
}
System.out.println("Goodbye.");
}
}
Homework Answers
import java.util.Scanner;
public class CalculatorProject {
public static void main (String[] args) {
Scanner yurr = new Scanner(System.in);
String mode;
double i;
String choice;
String answer = "Y";
while (answer.equals("Y")) {
System.out.println("Enter the calculator mode:
Standard/Scientific?");
mode = yurr.next();
if(mode.equals("Scientific")) {
System.out.print("Enter '+' for addition, '-' for subtractions, '*'
for multiplication, '/' for division, 'sin' for sin x, 'cos' for
cos x, 'tan' for tan x:");
System.out.println("Enter Choice: ");
choice = yurr.next();
switch(choice) {
case "+":
double results = 0.0, number= 0.0;
int x;
System.out.println("How many numbers do you want to add?");
x = yurr.nextInt();
System.out.println("Enter " + x + " numbers");
for ( i = 1.0; i <= x; i++) {
number = yurr.nextDouble();
results = results + number;
}
System.out.println("Result: " + results);
break;
case "-":
double results1 = 0.0, number1 = 0.0;
int x1;
System.out.println("How many numbers do you want to
subtract?");
x1 = yurr.nextInt();
System.out.println("Enter " + x1 + " numbers");
for ( i = 1.0; i <= x1 ; i++) {
number1 = yurr.nextDouble();
results1 = results1 - number1;
}
System.out.println("Result: " + results1);
break;
case "*":
double results2 = 1.0, number2=0.0;
int x2;
System.out.println("How many numbers do you want to
multiply?");
x2 = yurr.nextInt();
System.out.println("Enter " + x2 + " numbers");
for ( i = 1.0; i <= x2; i++) {
number2 = yurr.nextDouble();
results2 = results2 * number2;
}
System.out.println("Result: "+ results2);
break;
case "/":
double results3 = 1.0, number3 = 1.0;
int x3;
System.out.println("How many numbers do you want to
divide?");
x3 = yurr.nextInt();
System.out.println("Enter " + x3 + " numbers");
number3 = yurr.nextDouble();
results3=results3*number3;
for ( i = 1.0; i <= x3-1.0 ; i++) {
number3 = yurr.nextDouble();
results3 = results3 / number3;
}
System.out.println("Result: " + results3);
break;
case "sin":
double radian;
System.out.println("Enter a number in radians to find the
sine");
radian = yurr.nextDouble();
System.out.println("Result: " + Math.sin(radian));
break;
case "cos":
double radian1;
System.out.println("Enter a number in radians to find the
cosine");
radian1 = yurr.nextDouble();
System.out.println("Result: " + Math.cos(radian1));
break;
case "tan":
double radian2;
System.out.println("Enter a number in radians to find the
tangent");
radian2 = yurr.nextDouble();
System.out.println("Result: " + Math.tan(radian2));
break;
case "e":
System.out.println("Invalid operation entered");
}
}
else if (mode.equals("Standard")) {
System.out.println("The calculator will operate in standard
mode.");
System.out.print("Enter '+' for addition, '-' for subtractions,
'*' for multiplication, '/' for division, 'sin' for sin x, 'cos'
for cos x, 'tan' for tan x:");
System.out.println("Enter Choice: ");
choice = yurr.next();
switch (choice) {
case "+":
double results7=0.0, number7=0.0;
int x7;
System.out.println("How many numbers do you want to add?");
x7 = yurr.nextInt();
System.out.println("Enter " + x7 + " numbers");
for ( i = 1; i <= x7; i++) {
number7 = yurr.nextDouble();
results7 += number7;
}
System.out.println("Result: " + results7);
break;
case "-":
double results4 = 0.0, number4=0.0;
int x4;
System.out.println("How many numbers do you want to
subtract?");
x4 = yurr.nextInt();
System.out.println("Enter " + x4 + " numbers");
for ( i = 1.0; i <= x4; i++) {
number4 = yurr.nextDouble();
results4 -= number4;
}
System.out.println("Result: " + results4);
break;
case "*":
double results5 = 1.0, number5=0.0;
int x5;
System.out.println("How many numbers do you want to
multiply?");
x5 = yurr.nextInt();
System.out.println("Enter " + x5 + " numbers");
for ( i = 1.0; i <= x5; i++) {
number5 = yurr.nextDouble();
results5 *= number5;
}
System.out.println("Result: " + results5);
break;
case "/":
double results6 = 1.0, number6=1.0;
int x6;
System.out.println("How many numbers do you want to
divide?");
x6 = yurr.nextInt();
System.out.println("Enter " + x6 + " numbers");
number6 = yurr.nextDouble();
results6=results6*number6;
for ( i = 1.0; i <= x6 - 1.0; i++) {
number6 = yurr.nextDouble();
results6 /= number6;
}
System.out.println("Result: " + results6);
break;
}
}
else {
System.out.println("Invalid operation entered");
}
System.out.println("Do you want to start over? (Y/N)");
answer = yurr.next();
}
System.out.println("Goodbye.");
}
}
CORRECTION:
ADDITION IS WORKING FINE
IN DIVISION THE FIRST INPUT NUMBER SHOULD BE THE NUMERATOR AND REST ARE DENOMINATORS, SO FIRST INPUT SHOULD BE MULTIPLIED WITH THE RESULT . THANK YOU
Add Answer to:
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