laboursonline – MCQs, Mock Tests | C/C C Programming MCQ Part 1

The execution of a C program start from _____.

1. function
2. Header file
3. main()
4. Processor

✅ Correct Answer: 3

The C supports _____ basic data types

1. 8
2. 2
3. 10
4. 4

✅ Correct Answer: 4

The C program is converted to machine language using________.

1. An assembler.
2. A compiler
3. An interpreter.
4. An operating system.

✅ Correct Answer: 2

The C was developed in the year____

1. 1972.
2. 1960
3. 1975
4. 1971

✅ Correct Answer: 2

C language has been developed at_________.

1. AT & T Bell labs, USA.
2. IBM, USA
3. Borland International, USA
4. Sun Microsystems

✅ Correct Answer: 1

The C language is an offspring of ______

1. B language.
2. ALGOL language
3. BASIC language
4. ARITHMETIC language

✅ Correct Answer: 1

The programs should be written only in_______

1. lower case.
2. upper case
3. title case
4. sentence case.

✅ Correct Answer: 1

The role of a compiler is to translate source program statements to_________.

1. object codes
2. octal codes
3. decimal codes.
4. binary codes

✅ Correct Answer: 1

he extension for C program files by default is_________.

1. .c
2. .d
3. obj
4. exe

✅ Correct Answer: 1

An escape sequence commences with _____________.

1. .
2. /.
3. ?.
4. #.

✅ Correct Answer: 1

The C language is closely associated with _________.

1. MS-DOS.
2. Linux.
3. Unix.
4. MS-Windows.

✅ Correct Answer: 3

The C program is highly case sensitive

1. false
2. true
3. both (A) and (B)
4. none of the above

✅ Correct Answer: 2

Each instruction in C program is terminated by__________.

1. dot (.).
2. Comma (,).
3. Semi-colon (;)
4. curly brace ({}).

✅ Correct Answer: 3

Which of the following declaration is not supported by C?

1. String str;.
2. char *str;.
3. float str = 3e2;.
4. Both String str; & float str = 3e2;.

✅ Correct Answer: 1

ANSI committee was setup in the summer of___________.

1. 1983
2. 1985
3. 1990
4. 1976

✅ Correct Answer: 4

A declaration float a, b; occupies ___ of memory. .

1. 1 Byte.
2. 4 Bytes.
3. 8 Bytes.
4. 16 Bytes.

✅ Correct Answer: 3

Identify the wrong statement.

1. putchar(65).
2. putchar(‘x’).
3. putchar(“x”).
4. putchar(‘ ‘).

✅ Correct Answer: 3

An interpreter reads the source code of a program__

1. One line at a time.
2. Two lines at a time.
3. complete program in one stroke
4. complete program in two strokes.

✅ Correct Answer: 1

A compiler compiles the source code_______

1. complete program in one stroke.
2. one line at a time.
3. two lines at a time.
4. complete programs in two strokes.

✅ Correct Answer: 1

A character variable can store only___________.

1. 1 character.
2. 20 characters.
3. 254 characters
4. 265 characters.

✅ Correct Answer: 1

C variable cannot start with_________.

1. a number
2. an alphabet.
3. a character
4. a string.

✅ Correct Answer: 1

A short integer variable occupies memory_________.

1. 2 bytes.
2. 4 bytes.
3. 1 bytes.
4. 8 bytes.

✅ Correct Answer: 1

According to __________ C keywords are reserved words.

1. a compiler.
2. an interpreter.
3. header file.
4. an interpreter and header file.

✅ Correct Answer: 1

The declaration of C variable can be done____

1. anywhere in the program.
2. in declaration part.
3. in executable part.
4. at the end of the program.

✅ Correct Answer: 2

In C one statement can declare_________.

1. only one variable.
2. Two variables
3. Ten variables.
4. any number of variables.

✅ Correct Answer: 4

The word char is a_______

1. keyword.
2. password
3. header file.
4. statement

✅ Correct Answer: 1

The variables are initialized using_________.

1. greater than(>).
2. equal to (=).
3. twice equal to(==).
4. an increment operator(++).

✅ Correct Answer: 2

An unsigned integer variable contains values________.

1. greater or equal to zero.
2. less than zero.
3. only zeros.
4. (1) & (2) both.

✅ Correct Answer: 1

The keyword const keeps the value of a variable_________.

1. constant
2. mutable
3. variant
4. different

✅ Correct Answer: 1

The keyword const keeps the value of a variable_________.

1. constant
2. mutable
3. variant
4. different

✅ Correct Answer: 1

In C every variable has_______.

1. a type.
2. a name.
3. a value
4. a size.

✅ Correct Answer: 1

The range of character data type is_________.

1. -128 to 127.
2. 0 to 255.
3. 0 to 32767
4. 126 to 275.

✅ Correct Answer: 1

The keyword volatile keeps the value of variable__________.

1. constant.
2. mutable
3. variant
4. different

✅ Correct Answer: 1

Which is the incorrect variable name__________.

1. else.
2. name
3. age
4. char

✅ Correct Answer: 1

How many keywords are there in ANSI C?

1. 32.
2. 33.
3. 42.
4. 15.

✅ Correct Answer: 1

How many variables can be initialized at a time?

1. one
2. two.
3. Five
4. any number of variables

✅ Correct Answer: 1

Which of the following statement is valid?

1. 5+5=a
2. ss=12.25;
3. st=m * b;
4. is = A+ 10;

✅ Correct Answer: 1

__________ refers to the accuracy of the calculations.

1. Integrity.
2. Clartiy
3. Simplicity
4. Modularity

✅ Correct Answer: 1

The variable name can be started with__________. A.

1. underscore symbol (_).
2. asterisk symbol(*).
3. ampersand symbol(&)
4. minus symbol(-).

✅ Correct Answer: 1

What is the value of sizeof(char)?

1. 1.
2. 0.
3. -1.
4. -2.

✅ Correct Answer: 1

______ decides which operator is to be used first.

1. Hierarchy
2. Priority
3. ladder
4. Precedence

✅ Correct Answer: 4

The & operator displays________.

1. address of the variable.
2. value of the variable
3. result of the variable
4. both (a) & (b).

✅ Correct Answer: 1

Addition of two numbers is performed using _________.

1. arithmetic operator.
2. logical operator.
3. unary operator.
4. comma operator.

✅ Correct Answer: 1

What is the value of 10%8?

1. 8.
2. 2.
3. 1.
4. 0.

✅ Correct Answer: 2

What is the result of the expression (10/3)*3+5%3?

1. 11.
2. 10.
3. 8.
4. 1.

✅ Correct Answer: 1

What is the result of the expression (23*2) % (int) 5.5?

1. 2.
2. 1.
3. 3.
4. 0.

✅ Correct Answer: 2

What is the result of 5/2?

1. 4.
2. 8.
3. 2.
4. 5.

✅ Correct Answer: 3

What is the result of 5&&2?

1. 0.
2. 1.
3. 2.
4. 5.

✅ Correct Answer: 2

Which function is appropriate for accepting a string?

1. gets().
2. getch().
3. getche().
4. scanf().

✅ Correct Answer: 1

What is the ASCII range for 0 to 9 digits?

1. 48 to 57.
2. 65 to 90
3. 97 to 122.
4. 86 to 93.

✅ Correct Answer: 3