Consider the following C functionvoid swap (int a, int b){ int temp; temp = a; a = b; b = temp;}.In order to exchange the values of two variables x and y.
Question
Consider the following C functionvoid swap (int a, int b){ int temp; temp = a; a = b; b = temp;}.In order to exchange the values of two variables x and y.
Solution
To exchange the values of two variables x and y, you can use the swap function provided. Here are the steps to do so:
- Declare two variables, x and y, and assign them the desired values.
- Call the swap function, passing x and y as arguments.
- Inside the swap function, declare a temporary variable, temp.
- Assign the value of x to temp.
- Assign the value of y to x.
- Assign the value of temp to y.
- After the swap function is executed, the values of x and y will be exchanged.
Here's an example of how you can use the swap function:
#include <stdio.h>
void swap(int a, int b) {
int temp;
temp = a;
a = b;
b = temp;
}
int main() {
int x = 10;
int y = 20;
printf("Before swap: x = %d, y = %d\n", x, y);
swap(x, y);
printf("After swap: x = %d, y = %d\n", x, y);
return 0;
}
Output:
Before swap: x = 10, y = 20
After swap: x = 10, y = 20
In this example, the values of x and y remain unchanged after calling the swap function. This is because the swap function operates on copies of the variables a and b, not the original variables x and y. To actually exchange the values, you need to pass the addresses of x and y to the swap function and use pointers.
Similar Questions
Given datatype of two variable as an integer value and address of two variables as a void pointer to the function common_swap(). Do swap the values pointed by the two pointer variables. The integer value from 1 to 6 means the datatype. 1. char(%c) 2. short int(%hd) 3.long int(%ld) 4. long long int(%lld) 5. float(%f) 6. double(%lf).
Arun is working on a program to swap the values of two variables, a and b, without using a temporary variable. Write a program to help Arun accomplish this task.
Arun is working on a program to swap the values of two variables, a and b, without using a temporary variable. Write a program to help Arun accomplish this task.Input format :The first line of input is an integer value a.The second line of input is an integer value b.Output format :The output prints the values of a and b after swapping. Refer to the sample output for the formatting specifications.
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