C programming Quiz

There are ___ storage classes in C

• 2

• 4

• 6

• 8

Answer explanation

In C, there are 4 storage classes: auto, register, static, and extern. Each class defines the scope, visibility, and lifetime of variables, making '4' the correct answer.

The data type int uses ___ bytes of memory.

• 2

• 4

• 6

• 8

Answer explanation

The data type 'int' typically uses 2 bytes of memory in many programming environments, especially in older systems. Therefore, the correct answer is 2 bytes.

To show end of program ___ symbol used?

• <

• (

• {

• }

Answer explanation

The end of a program is typically denoted by the closing brace '}'. This symbol indicates the conclusion of code blocks in many programming languages, making it the correct choice for showing the end of a program.

Which is the incorrect form of variable?

• sale20

• Name

• 12Rno

• Net_Salary

Answer explanation

The variable '12Rno' is incorrect because variable names cannot start with a digit. The other options 'sale20', 'Name', and 'Net_Salary' are valid variable names.

What is the default C Storage Class for a variable?

• static

• auto

• register

• extern

Answer explanation

In C, the default storage class for a variable declared inside a function is 'auto'. This means the variable has automatic storage duration and is created and destroyed with the function's execution.

To find remainder _____ operator is use in C program

• %

• @

• /

• |

Answer explanation

In C programming, the '%' operator is used to find the remainder of a division operation. It returns the remainder after dividing one number by another, making it the correct choice for this question.

C program is save with _____ extension.

• .a

• .b

• .c

• .d

Answer explanation

C programs are saved with the .c extension, which is the standard file format for C source code. Therefore, the correct answer is .c.

Switch statement checks only _____ condition.

• Equality

• Not equal to

• Less than

• Greater than

Answer explanation

The switch statement evaluates expressions based on equality. It checks if the provided value matches any of the case values, making 'Equality' the correct choice. Other conditions like 'Not equal to', 'Less than', and 'Greater than' are not applicable.

Which one of following is not a reserved keyword in C?

• auto

• main

• case

• default

Answer explanation

In C, 'main' is the name of the entry point function and is not a reserved keyword. In contrast, 'auto', 'case', and 'default' are reserved keywords used for variable storage class, switch-case statements, and default case handling, respectively.

The printf() & scanf() function come from _____ header file.

• conio.h

• stdio.h

• math.c

• getio.h

Answer explanation

The printf() and scanf() functions are part of the standard input/output library in C, which is included in the stdio.h header file. Therefore, the correct answer is stdio.h.