Problem Statement: You are given a positive integer n .The second line will contain n positive integers.And the third line will contain a value Q.The next line will contain Q queries,every query will contain two values L and R.Now,You need to swap two values by the following way- >> Swap the values of index L with R . And lastly print the modified array. Note - You must swap the values using a function with pointers.And Consider the array as 1 base index. See the sample input output for more clarification. Constraints- 2<=n<=100 Values of array will be given between 1-1000 1<=L,R<=100 and L!=R Sample Input : Sample Output : 7 9 1 17 3 5 2 7 4 17 3 5 2 9 1 7 1 3 2 4 5 3 4 6 Explanation - 1st query - swap 1st index value with 3rd index value then the array will be - 17 1 9 3 5 2 7

 Problem Statement:

You are given a positive integer n .The second line will contain n positive integers.And the third line will contain a value Q.The next line will contain Q queries,every query will contain two values L and R.Now,You need to swap two values by the following way-

 

>> Swap the values of index L  with R .

 

And lastly print the modified array.

 

Note - You must swap the values using a function with pointers.And Consider the array as 1 base index.

 

See the sample input output for more clarification.

 

Constraints- 

2<=n<=100

Values of array will be given between 1-1000

1<=L,R<=100 and L!=R

 

Sample Input :     Sample Output :

 

7

9 1 17 3 5 2 7 

4     17 3 5 2 9 1 7

1 3 

2 4

5 3

4 6

 

Explanation -

1st query - swap 1st index value with 3rd index value then the array will be -  17 1 9 3 5 2 7

answer:

Here is a function in C that swaps the values of two variables using pointers:

void swap(int *a, int *b) {
  int temp = *a;
  *a = *b;
  *b = temp;
}

This function takes two pointers a and b, and swaps the values of the variables they point to using a temporary variable.

To use this function to swap the values of two elements in an array, you can do the following:

int arr[] = {9, 1, 17, 3, 5, 2, 7};
int n = 7;

// Swap elements at indices 1 and 3
swap(&arr[1], &arr[3]);

// Print the modified array
for (int i = 0; i < n; i++) {
  printf("%d ", arr[i]);
}
printf("\n");

This will output 17 3 9 1 5 2 7.

To implement the required behavior, you can read the values of n, the array, and Q from the input, and then read Q pairs of values L and R. For each pair, you can call the swap function to swap the values at indices L and R in the array, and then print the modified array.

Here is the complete program:

#include <stdio.h>

// Function prototype
void swap(int *a, int *b);

int main(void) {
  // Read the size of the array
  int n;
  scanf("%d", &n);

  // Read the elements of the array
  int arr[n];
  for (int i = 0; i < n; i++) {
    scanf("%d", &arr[i]);
  }

  // Read the number of queries
  int q;
  scanf("%d", &q);

  // Read and process each query
  for (int i = 0; i < q; i++) {
    // Read the indices to swap
    int l, r;
    scanf("%d %d", &l, &r);

    // Swap the values at indices l and r
    swap(&arr[l - 1], &arr[r - 1]);

    // Print the modified array
    for (int j = 0; j < n; j++) {