Course Title : Introduction to Software

Assignment Number : MCA(1)-02/Project/05

Maximum Marks : 15

Last date of Submission : 30 th April, 2005

Note: This is a Project. Answer all the questions. Each question carries equal weightage. You may use illustrations and diagrams to enhance explanations.

Question 1 : Write Regular Expressions for the following statements of C language:

• Ternary operator
• Variable declaration statement
• Increment and decrement statements

Question 2: An application program is being developed for a microprocessor based controller for an automobile. The application is required to perform the following functions:

• Monitor and display the speed of the automobile.
• Monitor the fuel level and raise the alarm, if necessary.
• Display the fuel efficiency, i.e. kilometres/ litre at current speed.
• Monitor the engine condition and raise an alarm if an unusual condition arises.
• Periodically record some auxiliary information like speed, fuel level etc.

Answer the following questions concerning the application:

• Is this a real time application? Justify your answer.
• It is proposed to use multi-tasking to reduce the response time of the application. What are the tasks in it? What should be their properties?
• Is it necessary to define any application-specific interrupts? If so, specify the interrupts and their priorities.

Question 3: Write shell programs for the following:

i. To find second largest number among the 5 numbers given.

ii. To find sum of all the alternate digits in a given 7 digit number.

iii. To count number of vowels in a given string.

iv. To take 2 strings as input, concatenate them and display the length of the resultant string.

v. To display the reverse of a given number.