Applying Software Development Method

To understand how software development method is applied, Consider a simple scenario where it is required to convert the temperature given in Fahrenheit to its corresponding Celsius value.

Program Objective :

To convert temperature value from Fahrenheit to Celsius.

Analysis :

Input : Temperature value in Fahrenheit

Output : Temperature value in Celsius 

Conversion Method : The Formula C = ( F-32 )/ 1.8 can be used to generate the desired output

Data Elements : Real Value F is used to store the input temperature value in Fahrenheit and a                                         real variable C is used to store the resultant temperature value in Celsius

Design :

Algorithm :

Step 1 : Read F

Step 2 : Compute C = ( F-32 )/1.8

Step 3 : Display C

Development :

Program :

#include <stdio.h>

#include <conio.h>

 void main ()

{

    float F, C;

    clrscr ();

    

    printf (" Enter the temperature value in Fahrenheit : " );

    scanf ( " *%f " , &f );

    C=( F-32.0)/1.8;

     

    printf( " The equivalent temperature value in degrees Celsius is : %.2f ",C );

    getch();

}

Testing :

The program must be tested with multiple input values so as to ensure that there are no logical errors present in the code 

Output : 

Enter the temperature value in Fahrenheit : 0

The equivalent temperature value in degrees Celsius is : -17.78

Enter the temperature value in Fahrenheit : 175

The equivalent temperature value in degrees Celsius is : 79.44

Enter the temperature value in Fahrenheit : 250

The equivalent temperature value in degrees Celsius is : 121.11