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How do you swap two numbers with pointers?

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How do you swap two numbers with pointers?

  1. #include
  2. int main()
  3. int x, y, *a, *b, temp;
  4. printf(“Enter the value of x and y\n”);
  5. scanf(“\%d\%d”, &x, &y);
  6. printf(“Before Swapping\nx = \%d\ny = \%d\n”, x, y);
  7. a = &x
  8. b = &y

How do you swap numbers in algorithms?

Algorithm and Flowchart to Swap Two Integer Numbers

  1. Declare a variable a,b and c as integer; Read two numbers a and b; c=a; a=b; b=a; Print a and b.
  2. STEP 1: START STEP 2: ENTER A, B STEP 3: PRINT A, B STEP 4: A = A + B STEP 5: B= A – B STEP 6: A =A – B STEP 7: PRINT A, B STEP 8: END.

Which algorithm is correct for swapping of two numbers in C programming?

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Swap Two Numbers Using Bitwise XOR.

How do you swap two variables without using third?

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.

What is pointer write program to swap values of two variables by passing pointers?

Explanation : Swapping Two Variables using Pointer scanf(“\%d”, &num1); printf(“\nEnter the Second number : “); scanf(“\%d”, &num2); Now You need to pass the address of both variables to the function.

How do you swap two numbers in Python?

Method 2: By using comma operator

  1. P = int( input(“Please enter value for P: “))
  2. Q = int( input(“Please enter value for Q: “))
  3. # To Swap the values of two variables.
  4. P, Q = Q, P.
  5. print (“The Value of P after swapping: “, P)
  6. print (“The Value of Q after swapping: “, Q)
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Is there a swap function in C?

To answer your question directly, no there is no swap function in standard C, although it would be trivial to write.

How do you swap two numbers without using pointers?

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)

How do you swap two arrays using pointers?

C Program to Accept an Array & Swap Elements using Pointers

  1. Declare an array and define all its elements.
  2. Create a function with two parameters i.e. two pointer variables.
  3. Inside this function, first create a temporary variable.
  4. Now, value at first pointer changes to the value at second pointer.