C programming Write a program that will read two floating point numbers (the fir

Question

C programming

Write a program that will read two floating point numbers (the first read into a variable called first and the second read into a variable called second) and then calls the function swap with the actual parameters first and second. The swap function having formal parameters number1 and number2 should swap the value of the two variables.

Sample Run:

Enter the first number

Then hit enter

80

Enter the second number

Then hit enter

70

You input the numbers as 80 and 70.

After swapping, the first number has the value of 70 which was the value of the second number

The second number has the value of 80 which was the value of the first number

Explanation / Answer

Swap Two Numbers / Variables using Pointer :

#include<stdio.h>

#include<conio.h>

{

void swap(int *num1, int *num2)
   int temp;
   temp = *num1;
   *num1 = *num2;
   *num2 = temp;
}

int main()

{
   int num1, num2;

   printf(" Enter the first number : ");
   scanf("%d", &num1);
   printf(" Enter the Second number : ");
   scanf("%d", &num2);

   swap(&num1, &num2);

   printf(" First number : %d", num1);
   printf(" Second number : %d", num2);

   return (0);
}

Output :

Enter the first number : 12
Enter the Second number : 22
First number : 22
Second number : 12

Swaping two numbers using pointers:

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