The Hyderabad Public School, Begumpet, Hyderabad, A.P

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1 The Hyderabad Public School, Begumpet, Hyderabad, A.P Department of Computer Science Class 8 Worksheet 3 1) How many times will the following statement execute? ( ) int a=5; while(a>6) { printf( Times ); a=a+2; } 2) How many times will be Hello printed when the following is executed? for(int i=2; i<9; i++) { printf( Hello ); } 3) Write the C - Expression for the following a. S= ut + ½ at 2 b. F = uv/(u+v) c. z= x 3 +y 3 xy/2 d. X = (b+b 2-4ac)/2a e. Y = 2(lb+bh+lh) f. 3x 2 + 2x + 5 4) What will be the output if x = 8? i. 2 * ++x - 3 ii. 3 * x ) int a=0, b = 30, c=40; a. a = --b + c++ + b; printf(( a = %d,a); 6) Identify the datatype, data value and variable name in the following statement. a. const float pi = 3.14; b. int year = 2009; c. char ans = y ; d. double g = ; 7) In the statement int a,b,c how many variables are declared and how much space is reserved for each. 8) Identify the Data type, data value and variable name in the following statements a) int a = 100; b) float c = 10.05; c) char c = a ; 9) Identify the following as valid or invalid variable names i. Student name ii. Admn.No. iii. Test2 iv. 2term 10) Write down the data types for the following i. Name of a person ii. A fractional number iii. Pi Value iv. Total Marks

2 11) Write the C expressions for the following i. V = u + at ii. A = (p+q) 2 + (p-q) 2 iii. R = r 2 + iv. P = a 2 + b 3 + c 4 12) Evaluate the following expressions. i. c = a a b (a=3, b=4) ii. a = a - ++a + a++ +4 (a=8) iii. If x = 4; find the value of x = x + x++ * ++x %2 iv. If m = 12; then find n = m++ * m 13) Write a statement to perform the following a. Assign the value of to a variable pie with the requisite data type. b. Assign the value of to a variable num with the requisite data type. 14) Write a statement to add the following lines as comments i. Best wishes for the Examinations ii. Learning to add comments in a program 15) Write a statement to include the following header files i. conio.h ii. stdlib.h iii. math.h Programs 1) Write a program to print natural numbers up to 10. 2) Write a program to print natural numbers up to 10 and their sum. 3) Write a program to print even numbers up to 10. 4) Write a program to print odd numbers up to 10. 5) Write a program to print even numbers up to 10 and their sum. 6) Write a program to print odd numbers up to 10 and their sum. 7) Write a program to calculate the factorial value for a given number. 8) Write a program to print natural numbers up to n where n value is given by the user. 9) Write a program to print natural number between 100 to ) Write a program to print first 10 natural numbers and their product. 11) Write a program to print even numbers between ) Write a program to print natural up to 10 in reverse order. 13) Write a program to print odd numbers up to 10 in reverse order. 14) Write a program to print natural numbers between a given range. 15) Write a program to print your name 10 times. 16) Write a program to display your name, class and age. 17) Write a program to accept length and breadth and calculate the area and perimeter of a rectangle. (Area = length X breadth, Perimeter = 2(Length + Breadth). 18) Write a program to accept side of a square and calculate the area and perimeter of a square.(area = side X side, Perimeter = 4Xside) 19) Write a program to calculate the volume of a sphere. (volume = 4/3 Pi r 3 ) 20) Write a program to calculate the area of a triangle. (Area = ½ X b X h). 21) Write a program to calculate the area and perimeter of a circle. (Area = pi X r 2, perimeter = 2 X pi X r) 22) Write a program to calculate the area of a cylinder. (Area = PI X r 2 X h) 23) Write a program to convert the temperature from Centigrade (Celsius) to Fahrenheit. (F = C* 9/5+32). 24) Write a program to accept two numbers and display the smallest. 25) Write a program to accept two numbers and display the biggest. 26) Write a program to accept a number and test whether it is even or odd.

3 27) Write a program to accept the age of a person and test whether eligible to vote or not. 28) Write a program to accept the year and test whether it is a leap or not. 29) Write a program to accept the week day number and print the corresponding week day name 30) Write a program to accept the Month number and print the corresponding Month name. 31) Write a program to print your name when as even number is entered or your age when an odd number is entered using if..else statement. 32) Write a program to print your name when an even number is entered or your age when an odd number is entered using Conditional operator. 33) Write a program to calculate the bill amount depending on the number of units consumed where bill amount is calculated as per the following specifications. Units consumed First 100 units Next 200 units Above 300 units Charge per unit 40 P per unit 60 P per unit Rs.1 per unit 34) Write a program to calculate the commission on sales for a salesman where commission is calculated based on the following conditions: Sales Commission in % <Rs % Rs.5000 to Rs % Above Rs % 35) Write a program to calculate the fine on a library book where the fine is calculated based on the number of days the book is returned late as per the following conditions. Days Fine per day First 10 days Rs.1 Next 10 days Rs.5 Later than 20 days Rs.8

4 I. Fill in the blanks 1. The statement x-=y is equal to. 2. The statement x+= yis equal to. 3. The statement x*=y is equal to. 4. The statement x/= y is equal to. 5. The commands used to write a program are known as. 6. The data type float occupies bytes. 7. Write a statement to include Checking Condition as a comment. 8. In the statement scanf( %d, &a), & is called as operator. 9. Keyword is used to declare a constant. 10. The Modulus operator is a 11. is a mixture of constants, variables and operators. 12. The format specifier for char data type is. 13. Variable can start or can have an 14. The commands used to write a program are called. 15. A statement in C ends with. 16. Write a statement to include the header file math..h. 17. The software that translates the source code into object code is called. 18. developed C language. 19. Declare a variable with x with the value Double occupies bytes of memory. 21. The function used to output a value is. 22. A=10, b=2, c=a%b, the value of c is. 23. Write a c statement to include the header files conio.h, math.h, string.h,. 24. In a switch statement, the default case is executed when the evaluated expression. 25. The appropriate data type for the value class is 26. The appropriate data type for the value c 27. The appropriate data type for the value The appropriate data type for the value The appropriate data type for the value The appropriate data type for the value COMPUTERSCIENCE 31. A variable cannot start with 32. The break statement is used when. 33. One byte equals to bits. 34. Declare a constant x with a value 4.5 with the requisite data type. 35. Declare a constant y with a value 125 with the requisite dtata type. 36. Write a statement to include software program as a comment line. 37. Write a statement to include the header file stdio.h 38. Write a statement to include the header file conio.h

5 39. Loops gets executed continuously until the user press the ctrl-c keys to stop it. 40. is an example of entry controlled lops. 41. is an example of exit controlled loop. 42. are useful when certain statements need to be executed repeatedly. 43. While loops takes one in the brackets. 44. Loops the loop is performed first, before the evaluation part. 45. Identify the data type, variable name and the date value in the following statements. a. int x = 45 ; b. float a= ; c. int y= 100; d. double s= ; e. char a= x ; f. AND (&&) is a operator. II. Correct and rewrite the sentences with out using the Not word. 1. To output a value we use a common library function called scanf(). 2. % operator is used to extract the quotient after dividing two numbers is the decrementing operator. 4. In the statement int a= 10; a is float type variable 5.!= is the logical operator. 6. The commands used to write a program are known as permissions. 7. To data type int is best suited to store the value The format specifier used for float and double is %c. 9. Variables are the predefined words which convey special meaning to the compiler. 10. If you write a program called computer in C it should be saved as computer.cpp 11. Include keyword is used to define a constant. 12. In the statement c=100; c is a constant. 13. Diagrams that logically represent instructions of a program are called as photos. 14. All Header files end with the extension.hd. 15. Char data type occupies 2 bytes. 16. Int data type occupies 6 bytes. 17. OR is a Relational operator. 18. The format specifier for integer data type is %S. 19. The keyword else is used with switch statement is called as the decrementing operator. 21. <> is the not equal to operator. 22. Switch statement is used to input a value. 23. The size off ( ) operator returns the size of the data type specified in brackets in Gigabits. 24. The format specified for float and double is %c. 25. Do while is an example of entry controlled loop.

6 26. For is example of exit controlled loop. 27. While is example of exit controlled loop. 28. To come out of the infinite loop we press shift key. 29. If want the loop to execute at least once before the condition is tested we for loops. 30. Addition(+),subtraction(-),multiplication(*) and division(/) are the examples of relational operators. 31. Logical operators are used for comparison. 32. AND is an example of arithmetic operator.

CAMBRIDGE SCHOOL, NOIDA ASSIGNMENT 1, TOPIC: C++ PROGRAMMING CLASS VIII, COMPUTER SCIENCE

CAMBRIDGE SCHOOL, NOIDA ASSIGNMENT 1, TOPIC: C++ PROGRAMMING CLASS VIII, COMPUTER SCIENCE a) Mention any 4 characteristic of the object car. Ans name, colour, model number, engine state, power b) What