Question

write a program in c to swap two numbers using two variable

Answer 1

To understand this example, you should have the knowledge of following C programming topics:

C Programming Data Types

C Programming Operators

C Input Output (I/O)

Example 1: Program to Swap Numbers Using Temporary Variable

#include <stdio.h> int main() { double firstNumber, secondNumber, temporaryVariable; printf("Enter first number: "); scanf("%lf", &firstNumber); printf("Enter second number: "); scanf("%lf",&secondNumber); // Value of firstNumber is assigned to temporaryVariable temporaryVariable = firstNumber; // Value of secondNumber is assigned to firstNumber firstNumber = secondNumber; // Value of temporaryVariable (which contains the initial value of firstNumber) is assigned to secondNumber secondNumber = temporaryVariable; printf("\nAfter swapping, firstNumber = %.2lf\n", firstNumber); printf("After swapping, secondNumber = %.2lf", secondNumber); return 0; }

Output

Enter first number: 1.20 Enter second number: 2.45 After swapping, firstNumber = 2.45 After swapping, secondNumber = 1.20

In the above program, the temporaryVariable is assigned the value of firstNumber.
Then, the value of firstNumber is assigned to secondNumber.
Finally, the temporaryVariable (which holds the initial value of firstNumber) is assigned to secondNumber which completes the swapping process.

Answer 2

HOPE IT HELPS..

IT'S A JAVA PROGRAM