Mandeep Das

Step-by-step explanation:

1. Declare three variables.
2. Assign the value of the first variable in temp.
3. Then assign the value of the second variable into the first variable.
4. Finally, assign the value of the temp variable into the second variable.

Let’s declared three variables temp, a and b—code logic to swap two numbers using the third variable.

1. //Logic to swap two numbers using third variable
2. temp = a;
3. a = b;
4. b = temp;

C Program to swap two numbers without using the third variable:

• Swap two numbers using a pointer
• Swap two numbers using bitwise XOR operator

We have understood how to swap two numbers using third variable. Let’s write a c code to implement them.

#include <stdio.h>

int main(void) // Variable declaration

{

int a, b, temp;

printf("Enter two numbers a and b ");

scanf("%d %d", &a, &b); 

// Swap logic

temp = a;

a = b;

b = temp;

printf("\n After swapping \na = %d\nb = %d\n", a, b);

return 0;

}