PROGRAM-1:
#include <stdio.h>
int main()
{
double firstNumber, secondNumber,
temporaryVariable;
printf("Enter first number:
");
scanf("%lf", &firstNumber);
printf("Enter second number:
");
scanf("%lf",&secondNumber);
temporaryVariable = firstNumber;
firstNumber = 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
PROGRAM-2:
#include <stdio.h>
int main()
{
double firstNumber, secondNumber;
printf("Enter first number:
");
scanf("%lf", &firstNumber);
printf("Enter second number:
");
scanf("%lf",&secondNumber);
firstNumber = firstNumber - secondNumber;
secondNumber = firstNumber + secondNumber;
firstNumber = secondNumber - firstNumber;
printf("\nAfter swapping,
firstNumber = %.2lf\n", firstNumber);
printf("After swapping,
secondNumber = %.2lf", secondNumber);
return 0;
}
OUTPUT:
Enter first number: 10.25
Enter second number: -12.5
After swapping, firstNumber = -12.50
After swapping, secondNumber = 10.25