## How can I add two numbers without an operator?

**Add two numbers without using the addition operator | 5 methods**

- Using subtraction operator. int add(int a, int b) { …
- Repeated Addition/Subtraction using –/++ operator. #include
… - Using printf() function. This method makes use of two facts: …
- Half adder logic. …
- Using logarithm and exponential function.

## How do you add two numbers in Java?

**Sum of Two Numbers Using Command Line Arguments in Java**

- public class SumOfNumbers4.
- {
- public static void main(String args[])
- {
- int x = Integer.parseInt(args[0]); //first arguments.
- int y = Integer.parseInt(args[1]); //second arguments.
- int sum = x + y;
- System.out.println(“The sum of x and y is: ” +sum);

## Which operator is used to add two numbers?

Arithmetic Operators

Operator | Meaning |
---|---|

− | Unary −: change the sign of the value |

* | Multiplication: multiply two values |

/ | Division: divide one value by another |

+ |
Addition: add two values |

## How do you read 2 numbers in Java?

**Full Code**

- import java. util. Scanner;
- public class Inputfunctions {
- public static void main(String[] args) {
- Scanner readme = new Scanner(System. in);
- System. out. println(“Enter Two Numbers (Press Enter after each):”);
- //two variables to hold numbers.
- double n1, n2, n3;
- n1 = readme. nextDouble();

## How do you divide numbers in Java?

println(Math. round(nr1 / ((double)nr2)*10.0)/10.0); Because when you divide two integers, the answer is always an integer which is always rounder down ((**int**)2.9 = 2 and (int)3.1 = 3). cast into doubles and then divide in order to get the right answer.

## What is swapping of two numbers?

Swap two numbers means **exchange the values of two variables with each other**. For example variable num1 contains 20 and num2 contains 40 after swap there values num1 contains 40 and num2 contains 20.

## How do you swap two variables without using third?

**Program to swap two numbers without using the third variable**

- STEP 1: START.
- STEP 2: ENTER x, y.
- STEP 3: PRINT x, y.
- STEP 4: x = x + y.
- STEP 5: y= x – y.
- STEP 6: x =x – y.
- STEP 7: PRINT x, y.
- STEP 8: END.

## How do you swap values in two variables?

**Let’s see a simple c example to swap two numbers without using third variable.**

- #include
- int main()
- {
- int a=10, b=20;
- printf(“Before swap a=%d b=%d”,a,b);
- a=a+b;//a=30 (10+20)
- b=a-b;//b=10 (30-20)
- a=a-b;//a=20 (30-10)

## What is the difference between and == operator?

The ‘==’ operator checks **whether the two given operands are equal or not**.

…

What is the difference between = (Assignment) and == (Equal to) operators.

= | == |
---|---|

It is used for assigning the value to a variable. | It is used for comparing two values. It returns 1 if both the values are equal otherwise returns 0. |

## Is == a logical operator?

Comparison operators — operators that compare values and return true or false . The operators include: > , < , >= , <= , === , and !== ... Logical operators — operators that combine multiple boolean expressions **or** values and provide a single boolean output. The operators include: && , || , and ! .

## Which operator has the lowest priority?

The operators are listed in order of priority, group 1 having the highest priority and **group 7** the lowest. All operators in the same priority group have the same priority. For example, the exponentiation operator ** has the same priority as the prefix + and prefix – operators and the not operator ¬.