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MCQOPTIONS
This section includes 1331 Mcqs, each offering curated multiple-choice questions to sharpen your Technical Programming knowledge and support exam preparation. Choose a topic below to get started.
| 801. |
An FT-IR instrument record a signal in the |
| A. | time domain |
| B. | frequency domain |
| C. | both (a) and (b) |
| D. | none of these |
| Answer» B. frequency domain | |
| 802. |
What is the similarity between a structure, union and enumeration? |
| A. | All of them let you define new values |
| B. | All of them let you define new data types |
| C. | All of them let you define new pointers |
| D. | All of them let you define new structures |
| Answer» C. All of them let you define new pointers | |
| 803. |
How will you free the allocated memory ? |
| A. | remove(var-name); |
| B. | free(var-name); |
| C. | delete(var-name); |
| D. | dalloc(var-name); |
| Answer» C. delete(var-name); | |
| 804. |
In C, if you pass an array as an argument to a function, what actually gets passed? |
| A. | Value of elements in array |
| B. | First element of the array |
| C. | Base address of the array |
| D. | Address of the last element of array |
| Answer» D. Address of the last element of array | |
| 805. |
Which of the following statement obtains the remainder on dividing 5.5 by 1.3 ? |
| A. | rem = (5.5 % 1.3) |
| B. | rem = modf(5.5, 1.3) |
| C. | rem = fmod(5.5, 1.3) |
| D. | Error: we cant divide |
| Answer» D. Error: we cant divide | |
| 806. |
The binary equivalent of 5.375 is |
| A. | 101.101110111 |
| B. | 101.011 |
| C. | 101011 |
| D. | None of above |
| Answer» C. 101011 | |
| 807. |
What are the different types of real data type in C ? |
| A. | float, double |
| B. | short int, double, long int |
| C. | float, double, long double |
| D. | double, long int, float |
| Answer» D. double, long int, float | |
| 808. |
In mathematics and computer programming, which is the correct order of mathematical operators ? |
| A. | Addition, Subtraction, Multiplication, Division |
| B. | Division, Multiplication, Addition, Subtraction |
| C. | Multiplication, Addition, Division, Subtraction |
| D. | Addition, Division, Modulus, Subtraction |
| Answer» C. Multiplication, Addition, Division, Subtraction | |
| 809. |
Which standard library function will you use to find the last occurance of a character in a string in C? |
| A. | strnchar() |
| B. | strchar() |
| C. | strrchar() |
| D. | strrchr() |
| Answer» E. | |
| 810. |
Input/output function prototypes and macros are defined in which header file? |
| A. | conio.h |
| B. | stdlib.h |
| C. | stdio.h |
| D. | dos.h |
| Answer» D. dos.h | |
| 811. |
Which bitwise operator is suitable for checking whether a particular bit is on or off? |
| A. | && operator |
| B. | & operator |
| C. | || operator |
| D. | ! operator |
| Answer» C. || operator | |
| 812. |
Which bitwise operator is suitable for turning on a particular bit in a number? |
| A. | && operator |
| B. | & operator |
| C. | || operator |
| D. | | operator |
| Answer» E. | |
| 813. |
Which bitwise operator is suitable for turning off a particular bit in a number? |
| A. | && operator |
| B. | & operator |
| C. | || operator |
| D. | ! operator |
| Answer» C. || operator | |
| 814. |
In which numbering system can the binary number 1011011111000101 be easily converted to? |
| A. | Decimal system |
| B. | Hexadecimal system |
| C. | Octal system |
| D. | No need to convert |
| Answer» C. Octal system | |
| 815. |
In a file contains the line "I am a boy\r\n" then on reading this line into the array str using fgets(). What will str contain? |
| A. | "I am a boy0" |
| B. | "I am a boy0" |
| C. | "I am a boy0" |
| D. | "I am a boy" |
| Answer» D. "I am a boy" | |
| 816. |
Which of the following function is more appropriate for reading in a multi-word string? |
| A. | printf(); |
| B. | scanf(); |
| C. | gets(); |
| D. | puts(); |
| Answer» D. puts(); | |
| 817. |
Which of the following function is used to find the first occurrence of a given string in another string? |
| A. | strchr() |
| B. | strrchr() |
| C. | strstr() |
| D. | strnset() |
| Answer» D. strnset() | |
| 818. |
The library function used to find the last occurrence of a character in a string is |
| A. | strnstr() |
| B. | laststr() |
| C. | strrchr() |
| D. | strstr() |
| Answer» D. strstr() | |
| 819. |
If the two strings are identical, then strcmp() function returns |
| A. | -1 |
| B. | 1 |
| C. | 0 |
| D. | Yes |
| Answer» D. Yes | |
| 820. |
Which of the following function sets first n characters of a string to a given character? |
| A. | strinit() |
| B. | strnset() |
| C. | strset() |
| D. | strcset() |
| Answer» C. strset() | |
| 821. |
The operator used to get value at address stored in a pointer variable is |
| A. | * |
| B. | & |
| C. | && |
| D. | || |
| Answer» B. & | |
| 822. |
A pointer is |
| A. | A keyword used to create variables |
| B. | A variable that stores address of an instruction |
| C. | A variable that stores address of other variable |
| D. | All of the above |
| Answer» D. All of the above | |
| 823. |
If a variable is a pointer to a structure, then which of the following operator is used to access data members of the structure through the pointer variable? |
| A. | . |
| B. | & |
| C. | * |
| D. | -> |
| Answer» E. | |
| 824. |
In which header file is the NULL macro defined? |
| A. | stdio.h |
| B. | stddef.h |
| C. | stdio.h and stddef.h |
| D. | math.h |
| Answer» D. math.h | |
| 825. |
What is (void*)0? |
| A. | Representation of NULL pointer |
| B. | Representation of void pointer |
| C. | Error |
| D. | None of above |
| Answer» B. Representation of void pointer | |
| 826. |
The keyword used to transfer control from a function back to the calling function is |
| A. | switch |
| B. | goto |
| C. | go back |
| D. | return |
| Answer» E. | |
| 827. |
In which order do the following gets evaluated . Relational 2. Arithmetic 3. Logical 4. Assignment |
| A. | 2134 |
| B. | 1234 |
| C. | 4321 |
| D. | 3214 |
| Answer» B. 1234 | |
| 828. |
When we mention the prototype of a function? |
| A. | Defining |
| B. | Declaring |
| C. | Prototyping |
| D. | Calling |
| Answer» C. Prototyping | |
| 829. |
By default a real number is treated as a |
| A. | float |
| B. | double |
| C. | long double |
| D. | far double |
| Answer» C. long double | |
| 830. |
How would you round off a value from 1.66 to 2.0? |
| A. | ceil(1.66) |
| B. | floor(1.66) |
| C. | roundup(1.66) |
| D. | roundto(1.66) |
| Answer» B. floor(1.66) | |
| 831. |
Which of the following special symbol allowed in a variable name? |
| A. | * (asterisk) |
| B. | | (pipeline) |
| C. | - (hyphen) |
| D. | _ (underscore) |
| Answer» E. | |
| 832. |
What are the types of linkages? |
| A. | Internal and External |
| B. | External, Internal and None |
| C. | External and None |
| D. | Internal |
| Answer» C. External and None | |
| 833. |
Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ? |
| A. | rem = 3.14 % 2.1; |
| B. | rem = modf(3.14, 2.1); |
| C. | rem = fmod(3.14, 2.1); |
| D. | Remainder cannot be obtain in floating point division. |
| Answer» D. Remainder cannot be obtain in floating point division. | |
| 834. |
Which one of the following keyword is used to inherit our subclass into a superclass? |
| A. | extends |
| B. | implements |
| C. | inherit |
| D. | include |
| Answer» B. implements | |
| 835. |
A function call mechanism that passes arguments to a function by passing a copy of the values of the arguments is ............... |
| A. | call by name |
| B. | call by value |
| C. | call by reference |
| D. | call by value result |
| Answer» C. call by reference | |
| 836. |
A character variable can never store more than ............... |
| A. | 32 characters |
| B. | 8 characters |
| C. | 254 characters |
| D. | 1 character |
| Answer» E. | |
| 837. |
An integer constant in C must have ................... |
| A. | At least one digit |
| B. | At least one decimal point |
| C. | A comma along with digits |
| D. | Digits separated by commas |
| Answer» B. At least one decimal point | |
| 838. |
While incrementing a pointer, its value gets increased by the length of the data type to which it points. This length is called |
| A. | scale factor |
| B. | length facto |
| C. | pointer factor |
| D. | increment factor |
| Answer» E. | |
| 839. |
Which can be passed as an argument to a function? |
| A. | constant |
| B. | expression |
| C. | another function |
| D. | all of the above. |
| Answer» B. expression | |
| 840. |
What will be the output of the following program? #include void main() { float x=5,y=2; int result; result=x % y; cout |
| A. | 1 |
| B. | 1.0 |
| C. | Error message |
| D. | 2.5 |
| Answer» D. 2.5 | |
| 841. |
Which of the following statement is valid? |
| A. | We can create new C++ operators. |
| B. | We can change the precedence of the C++ operators. |
| C. | We can change the associativity of the C++ operators. |
| D. | We can not change operator templates. |
| Answer» E. | |
| 842. |
Which of the following operator can be overloaded through friend function? |
| A. | -> |
| B. | = |
| C. | ( ) |
| D. | * |
| Answer» E. | |
| 843. |
What will be the result of the expression 13 & 25? |
| A. | 38 |
| B. | 25 |
| C. | 9 |
| D. | 12 |
| Answer» D. 12 | |
| 844. |
In the following code fragment int x, y = 2, z, a; x=(y*=2) + (z=a=y); printf (‘%d’,x); |
| A. | prints 8 |
| B. | prints 6 |
| C. | prints 6 or 8 depending on the compiler |
| D. | is syntactically wrong |
| Answer» B. prints 6 | |
| 845. |
What is the output of the following code int n=0, m; for (m=1; m |
| A. | 2 |
| B. | 1 |
| C. | 0 |
| D. | 6 |
| Answer» C. 0 | |
| 846. |
If a=8 and b=15 then the statement x= (a>b) ? a:b; |
| A. | assigns a value 8 to x |
| B. | gives an error message |
| C. | assigns a value 15 to x |
| D. | assigns a value 7 to x |
| Answer» D. assigns a value 7 to x | |
| 847. |
Which of the following ways are legal to access a class data member using this pointer? |
| A. | this.x |
| B. | *this.x |
| C. | *(this.x) |
| D. | (*this).x |
| Answer» E. | |
| 848. |
Overloading a postfix increment operator by means of a member function takes |
| A. | no argument |
| B. | one argument |
| C. | two arguments |
| D. | three arguments |
| Answer» B. one argument | |
| 849. |
A copy constructor takes |
| A. | no argument |
| B. | one argument |
| C. | two arguments |
| D. | arbitrary no. of arguments |
| Answer» C. two arguments | |
| 850. |
What would be the output of the following? #include void main() { char *ptr=“abcd” char ch; ch = ++*ptr++; cout |
| A. | a |
| B. | b |
| C. | c |
| D. | d |
| Answer» C. c | |