Class 9 Computer Science SEBA Chapter 9 Solution SEBA Solution

Class 9 SEBA Chapter 9 Solution SEBA Computer Science Solution

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Class 9 SEBA Computer Science Solution provides comprehensive guidance for understanding key concepts in the subject. Class 9 SEBA Computer Science Solution focuses on simplifying complex topics and offering step-by-step explanations. Class 9 SEBA Computer Science Solution ensures students gain clarity in programming basics and theoretical knowledge. Class 9 SEBA Computer Science Solution is ideal for exam preparation and practical application. Class 9 SEBA Computer Science Solution supports students in achieving academic success with confidence.
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1. Fill in the blanks.

(a) Identifiers in C programming language start with _____.
Ans. letter.

(b) Break is a keyword in C _____. (True/False)
Ans. True.

(d) An integer variable typically reserves _____ bytes in memory.
Ans. 4.

(e) Built-in function used to accept user input from the keyboard is ____.
Ans. scanf().

(f) Format specifier for accepting value from keyboard for an integer variable is _____.
Ans. %d.

(g) Every operator in C requires exactly two operands ____. (True/False)
Ans. False.

(h) ____ sign is used to indicate reminder operation in C.
Ans. % .

(i) To compare two float variables in C, we can use _____ statement.
Ans. if.

(j) When we need to select a set of statements for execution in a C program based on some integral value, a good choice can be to use ____ construct.
Ans. switch ( ).

2. Short answer questions.

1. If we need to execute many statements when an if condition in C returns true, how can we write them? Write a code segment.

2. List five commonly used operators of C programming language with their meanings.

3. The scanf statement should always be preceded by a printf statement in C. Is it true? Explain briefly.

3. Programming assignments:

1. Write a C program and try to declare variables of type int with the following variable names separately.
first_variable, second Variable, Third Variable, char, number, -, —, _x, 9months, blp24, 8724, dimatala, gogamukh??, I want to be a doctor. Report if any variable declarations are not permitted by the Compiler. Analyse the reasons (Hint : refer Section 9.1).

2. Write the following code segment inside the main() function of a C program and run it. Analyse the output. Relate the output with the concepts learned in Section 9.2 about the allocated space of a variable in computer memory.
int var = 7;
Printf (“The value of var is %d.”, var);
Printf (“The address of var in memory is %p.”, &var);

3. Write the following code segment inside the main () function of a C program and run it. Analyse the output. Relate the output with the concepts learned in Section 9.2 about the allocated space of a variable in computer memory.
int p = 9;
printf(“Size of the variable p is %ld \n”, sizeof(p) );
Printf (“Size of an integer is %ld \n”, sizeof(int) );
printf(“Storage for the type of the variable p is %ld \n”, sizeof(typeof (p) ) );

4. Write a C program to do the following.
(i) Declare three integer variables as int p = 9, q = 7, result = 0;
(ii) Display the value of the result variable after performing the following operations and storing the output of each operation in it.
(iii) Perform ++ result; result++; result – -; Display value of result at each step.

5. Write a C program to find the area of a rectangle. The length and width of the rectangle are inputs.

6. Change the programming example B.1 to accept the integers from the keyboard using scanf() function.

7. Improve the programming example B.5 to check whether the student scores PASS or FALL in individual subjects [Hint: use if clause].

8. Improve the programming example B.5 to check whether every mark entered from the keyboard is positive or not. If any mark is wrongly entered as negative, prompt the user to re-enter. [Hint: use if clause and them put scanf()].

9. Write a program in C for awarding student grade (as example B.5) using switch-case construct.

Our Class 9 SEBA Computer Science solution helps students understand key concepts effectively. The Class 9 SEBA Computer Science solution is designed for easy learning and success.