How do you exchange a value with two variables?

How do you exchange a value with two variables?

The bitwise XOR operator can be used to swap two variables. The XOR of two numbers x and y returns a number that has all the bits as 1 wherever bits of x and y differ. For example, XOR of 10 (In Binary 1010) and 5 (In Binary 0101) is 1111 and XOR of 7 (0111) and 5 (0101) is (0010).

How do you change variables in shell script?

Bash shell script to swap two numbers

1. Store the value of the first number into a temp variable.
2. Store the value of the second number in the first number.
3. Store the value of temp into the second variable.

How do I return a value from one shell script to another?

A function may return a value in one of four different ways:

1. Change the state of a variable or variables.
2. Use the exit command to end the shell script.
3. Use the return command to end the function, and return the supplied value to the calling section of the shell script.

How do you swap two variables without using a third variable?

Program to swap two numbers without using the third variable

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

How do you write a program to swap two numbers?

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

1. #include
2. int main()
3. {
4. int a=10, b=20;
5. printf(“Before swap a=%d b=%d”,a,b);
6. a=a+b;//a=30 (10+20)
7. b=a-b;//b=10 (30-20)
8. a=a-b;//a=20 (30-10)

What is the meaning of $1 in Linux?

$1 is the first command-line argument passed to the shell script. $0 is the name of the script itself (script.sh) $1 is the first argument (filename1) $2 is the second argument (dir1)

How do I run one script from another script?

There are a couple of different ways you can do this:

1. Make the other script executable, add the #!/bin/bash line at the top, and the path where the file is to the $PATH environment variable.
2. Or call it with the source command (alias is . )
3. Or use the bash command to execute it: /bin/bash /path/to/script ;

What is return in shell script?

return command is used to exit from a shell function. It takes a parameter [N], if N is mentioned then it returns [N] and if N is not mentioned then it returns the status of the last command executed within the function or script.

How do I swap two numbers using Bitwise Operators?

Java Program to Swap Two Numbers Using Bitwise Operator

1. Find the binary equivalent of given variables, say X and Y.
2. Find X^Y and store it in x, i.e. X = X ^ Y.
3. Again, find X^Y and store it in Y, i.e. Y = X ^ Y.
4. Find X^Y and store it in X, i.e. X = X ^ Y.
5. The numbers are swapped.

How do you swap values between two variables in Java?

Java Program to Swap two Variables

1. Assign x to a temp variable : temp = x.
2. Assign y to x : x = y.
3. Assign temp to y : y = temp.