IT 1003 Introduction to Programming (New)

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1 [All Rights Reserved] SLIATE SRI LANKA INSTITUTE OF ADVANCED TECHNOLOGICAL EDUCATION (Established in the Ministry of Higher Education, vide in Act No. 29 of 1995) Instructions for Candidates: Answer five (05) questions only. Higher National Diploma in Information Technology First Year, 1 ST Semester Examination IT 1003 Introduction to Programming (New) Time : Three (03) hours No of pages : 06 No of questions : 08 (1) a) What is meant by terms source code and object code in programming? [04 Marks] b)what is pseudo code? c) What are the symbols used in flow charting to indicate following. I. input II. Start/End III. Process IV. Decision [04 Marks] d) What is the expected output of the following pseudo code? [02 Marks] Begin X=1 While X<10 X=X+1 End while Display X End e) Write pseudo codes to input two numbers and display the smaller one. [04 Marks] f) Draw a flowchart to find largest number of given 6 numbers. [06Marks] 1

2 (2) a)what is the meaning of keyword in programming? [03 Marks] b) Write keywords used in c++ to perform following tasks. I. Declare a constant II. III. IV. Immediately exit from a loop Declare a variable to hold a large integer Declare a variable to hold a number with decimal values V. Declare a class [05 Marks] c) Write following statements using arithmetic assignment operators. I. number=number+12 II. number=number%12 III. number=number*12 [03 Marks] d) Write output of the following program segments. I. intnostuds = 135 ; cout<< Number of \ students\ is ; cout<< \n ; cout<<nostuds ; II. intclassfive = 10 ; intclasssix = 12 ; intclassseven = 14 ; cout<< Average age of students of class 5,6 and 7 is ; cout<< \t <<ClassFive<< \t <<ClassSix<< \t <<ClassSeven ; III. cout<<(10+20); cout<<(010); cout<<(010+10); cout<<( ); [09 Marks] 2

3 (3) a)mention the reasons for the following error messages. [09 Marks] i. Info :Compiling H:\c++\source codes\function.cpp Error: function.cpp(10,6):statement missing ; ii. Info :Compiling H:\c++\source codes\function.cpp Error: function.cpp(13,8):call to undefined function 'getch' iii. Info :Compiling H:\c++\source codes\function.cpp Error: function.cpp(7,10):undefined symbol 'n' b) What is the syntax of if else statement? [03 Marks] c) What is the output of the following program? [02 Marks] void main() { int first=10,second=20; if (first>second) cout<<"first"; else cout<<"second"; } d) Write a c++ program to input age of a person and display the relevant result according to the following criteria. [06 Marks] Age<=3 Free 3>Age <=12 Half 12>Age Full 3

4 (4) a) What is the role of #include directive in c++? [02 Marks] b) What is the difference between local and global variables? [03 Marks] c) Identify local/global variables from following code segment. [03 Marks] #include <iostream.h> int x; void main() { float y; for(int z=0;z<10;z++) cout<<x; } d) What is meant by function prototype? [02 Marks] e) Briefly explain the use of default arguments in a function. [02 Marks] f) Write and test the following function that returns the minimum value of the 3 integers given as arguments. [08 Marks] int min(int a, int b, int c); (5) a)write syntax of while loop and do while loop. [04 Marks] b) How do you choose for loop and while loop? [03 Marks] c) What is the expected output of the following code fragment? [03 Marks] while(20) { Cout<< SLIATE ; } d) What do you mean by nested loops? [02 Marks] 4

5 e) Write a program to generate following pattern. 08 Marks] ###### ##### #### ### ## # (6) a) Using an example explain the following. [06 Marks] I. Declare an array called marks of type int and that should be able to hold 10 values. II. Initialize above array with following values. 75,45,65,78,90,87,43,25,63,96 b) Write c++ statements to do the following. I. Declare an array Number of 15 elements of the type int. [01 Marks] II. Output the value of tenth element of array Number. [02 Marks] III. Set the value of fifth element of array Number to 25. [02 Marks] IV. Set the value of ninth element of the array Number to the sum of sixth and seventh elements of the array Number. [02 Marks] V. Set the value of the fourth element of the array Number to three times the value of eighth element. [02 Marks] VI. Output array Number so that five elements per line are printed. [05 Marks] 5

6 (7) a) What is a pointer in c++? [02 Marks] b) What operator is used to determine the address of a variable? [02 Marks] c) Suppose that you have aint pointer variable called x. Write a statement that prints the value of x. [03 Marks] d) What is the syntax of switch statement in c++? [04 Marks] e) Write a program that takes a character as an input and print the relevant word according to the following instructions. if the character is A Apple B Banana G - Grapes O Orange M Mango Any other character - Incorrect Input [09 Marks] (8) a)what is the use of private and public members in a class? [04 Marks] b)define a class called Student with stu-number, name and age as attributes and setdate and printdata as functions to input data and output data respectively. [06 Marks] c) Write a main function to do the following. [06 Marks] I. create two objects of student class II. III. input data to the first student Print data of the first student d) Explain single inheritance and multiple inheritance. [04 Marks] 6

CS201- Introduction to Programming Current Quizzes

CS201- Introduction to Programming Current Quizzes Q.1 char name [] = Hello World ; In the above statement, a memory of characters will be allocated 13 11 12 (Ans) Q.2 A function is a block of statements