C Programming Multiple Choice Quiz

C Programming Multiple Choice Questions

• The developer of the C programming language is Dennis Ritchie.
• C was developed in 1972.
• C is a middle-level programming language.
• C is available for all operating systems including DOS, Unix, and Windows.
• The # symbol is used for pre-processor statements in C.
• Float is a scalar data type in C.
• Tokens in C include keywords, variables, and constants.
• The valid range of the int data type is -32768 to +32767.
• The ; symbol is used to terminate a statement in C.
• The \n escape sequence character is a line terminator in C.
• The \a escape sequence character is used to beep from the speaker in C.
• Character constants are enclosed between single quotes.
• String constants are enclosed between double quotes.
• ‘abc’ is an invalid character constant in C, as it contains multiple characters.
• The maximum length of a variable in C is 32 characters.
• The maximum size of a float variable is 4 bytes.
• The maximum size of a double variable is 8 bytes.
• A declaration of float a; double b; occupies 12 bytes of memory (4 bytes for float & 8 bytes for double).
• The size of a string variable is not specific and depends on the length of the string.
• a+=10 is an example of a compounded assignment statement in C.
• The && operator is used for logical comparison in C.
• The & operator is used for bitwise AND in C.
• The equality operator is represented by == in C.
• Operator precedence determines the order in which operators are evaluated first in C.
• The bitwise AND operator is used for masking in C.
• The % operator is used for modulo (remainder) in C.
• The associability of the = operator is right to left in C.
• The () operator has the highest priority in C.
• The || operator has the lowest priority in C.
• Integer division in C truncates the fractional part.
• ?: is a Ternary Operator.
• (data type) is a type casting operator.
• Explicit type conversion is also known as casting.
• a+=4 is equivalent to a=a+4.
• p++ executes faster than p=p+1 because it is a single instruction.
• C Library functions provide input/output (I/O) facilities.
• Header files in C contain library functions.
• getchar() and putchar() are used for single character I/O.
• printf() returns a negative value when an error occurs.
• putchar(“x”) is an invalid statement in C because it attempts to pass a string to the putchar() function, which is designed for single characters.
• An ampersand (&) in scanf() before a variable name denotes the address of the variable.
• Symbolic constants can be defined using #define.
• The null character is represented by \0.
• The string.h header file is essential for using the strcmp() function.
• malloc() is available in the stdlib.h header file.
• ctype.h contains testing and conversion character functions.
• C supports three looping statements: for, while, and do-while.
• A statement differs from an expression by terminating with a semicolon (;).
• goto is an unconditional control structure.
• auto is a keyword used for storage class.
• a represents a character in C language.
• There are 7 arithmetic operators: + - * / % ++ --.
• There are 32 keywords available in C.
• The advantage of a UNION over a STRUCTURE is memory storage.
• The maximum number of elements in the array declaration int arr; is not specified and depends on the compiler.
• Array subscripts in C always start at 0.
• *int ptr; is the correct way to declare a pointer.
• 17.23 is the output of printf(“2.3f\n”,17.23478).
• The values will be 5, -6 for floor(5.8) and floor(-5.8), respectively.
• 107 is the value of X.
• The output of the program is 91.
• The output of the program is 12.
• A Binary operator applies to two operands while an Unary operator applies to a single operand.
• A variable is a place where we can store data, and the size of an INT is 16 bits.
• Variables can consist of letters, numbers, and underscores. You cannot use keywords.
• The output of the program is: "India is my Country".
• The output of the program is: "India is my Country!!".