MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
main() { int x = 0; for (; ;) { if ( x++ == 4) break; continue; } printf(“x = %d\n”, x); } What will be printed when the above code is executed? |
| A. | X = 0 |
| B. | X = 1 |
| C. | X = 4 |
| D. | X = 5 |
| Answer» E. | |
| 2. |
if default statement is omitted and there is no match with the case table |
| A. | No statement within switch case will be executed |
| B. | Syntax error is produced |
| C. | Executes all the statements in the switch case construct |
| D. | Executes the last case statement only |
| Answer» B. Syntax error is produced | |
| 3. |
do-while loop terminates when conditional expression returns? |
| A. | Zero |
| B. | One |
| C. | Non-zero |
| D. | -1 |
| Answer» B. One | |
| 4. |
Which of the following cannot be checked in a switch-case statement? |
| A. | Character |
| B. | Integer |
| C. | Float |
| D. | enum |
| Answer» D. enum | |
| 5. |
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 | |
| 6. |
A program is a: |
| A. | Javascript for a theatrical play |
| B. | Set of implementations |
| C. | A list of instructions (actions) to accomplish a task |
| D. | What you watch on TV |
| Answer» D. What you watch on TV | |
| 7. |
The size of a structure can be determined by a. size of variable name b. size of (struct tag)" |
| A. | Only a |
| B. | Only b |
| C. | Both a and b |
| D. | None of these options |
| Answer» D. None of these options | |
| 8. |
What is the result of 16>>2? |
| A. | 4 |
| B. | 8 |
| C. | 3 |
| D. | 0 |
| Answer» B. 8 | |
| 9. |
Who calls to the fuction main() |
| A. | kernel |
| B. | operating system |
| C. | cpu |
| D. | ALU |
| Answer» C. cpu | |
| 10. |
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() | |
| 11. |
The function that calls itself for its processing is known as. |
| A. | Inline Function |
| B. | Nested Function |
| C. | Overloaded Function |
| D. | Recursive Function |
| Answer» E. | |
| 12. |
Can you use the fprintf() to display the output on the screen? |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 13. |
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. | |
| 14. |
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 | |
| 15. |
What will the function rewind() do? |
| A. | Reposition the file pointer to a character reverse. |
| B. | Reposition the file pointer stream to end of file. |
| C. | Reposition the file pointer to begining of that line. |
| D. | Reposition the file pointer to begining of file. |
| Answer» E. | |
| 16. |
What do the following declaration signify? int (*pf)(); |
| A. | pf is a pointer to function. |
| B. | pf is a function pointer. |
| C. | pf is a pointer to a function which return int |
| D. | pf is a function of pointer variable. |
| Answer» D. pf is a function of pointer variable. | |
| 17. |
What do the following declaration signify? char *arr[10]; |
| A. | arr is a array of 10 character pointers. |
| B. | arr is a array of function pointer |
| C. | arr is a array of characters. |
| D. | arr is a pointer to array of characters. |
| Answer» B. arr is a array of function pointer | |
| 18. |
Specify the 2 library functions to dynamically allocate memory? |
| A. | malloc() and memalloc() |
| B. | alloc() and memalloc() |
| C. | malloc() and calloc() |
| D. | memalloc() and faralloc() |
| Answer» D. memalloc() and faralloc() | |
| 19. |
How will you free the memory allocated by the following program? #include<stdio.h> #include<stdlib.h> #define MAXROW 3 #define MAXCOL 4 int main() { int **p, i, j; p = (int **) malloc(MAXROW * sizeof(int*)); return 0; } |
| A. | memfree(int p); |
| B. | dealloc(p); |
| C. | malloc(p, 0); |
| D. | free(p); |
| Answer» E. | |
| 20. |
In the following code what is 'P'? typedef char *charp; const charp P; |
| A. | P is a constant |
| B. | P is a character constant |
| C. | P is character type |
| D. | None of the above |
| Answer» B. P is a character constant | |
| 21. |
In the following code, the P2 is Integer Pointer or Integer? typedef int *ptr; ptr p1, p2; |
| A. | Integer |
| B. | Integer pointer |
| C. | Error in declaration |
| D. | None of the above |
| Answer» C. Error in declaration | |
| 22. |
What do the 'c' and 'v' in argv stands for? |
| A. | c means argument control v means argument vector |
| B. | c means argument count v means argument vertex |
| C. | c means argument count v means argument vector |
| D. | c means argument configuration v means argument visibility |
| Answer» D. c means argument configuration v means argument visibility | |
| 23. |
The maximum combined length of the command-line arguments including the spaces between adjacent arguments is |
| A. | 128 characters |
| B. | 256 characters |
| C. | 67 characters |
| D. | It may vary from one operating system to another |
| Answer» E. | |
| 24. |
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); | |
| 25. |
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 | |
| 26. |
What will be the output of the program? #include<stdio.h> int main() { int y=128; const int x=y; printf("%d\n", x); return 0; } |
| A. | 128 |
| B. | Garbage value |
| C. | Error |
| D. | 0 |
| Answer» B. Garbage value | |
| 27. |
Which of the following cannot be static in C? |
| A. | Variables |
| B. | Functions |
| C. | Structures |
| D. | None of the mentioned |
| Answer» E. | |
| 28. |
What is the output of this C code? #include <stdio.h> void main() { static int x; if (x++ < 2) main(); } |
| A. | Infinite calls to main |
| B. | Run time error |
| C. | Varies |
| D. | main is called twice |
| Answer» E. | |
| 29. |
What is the output of this C code? #include <stdio.h> struct student { char a[5]; }; void main() { struct student s[] = {"hi", "hey"}; printf("%c", s[0].a[1]); } |
| A. | h |
| B. | i |
| C. | e |
| D. | y |
| Answer» C. e | |
| 30. |
What is the output of the below c code? #include <stdio.h> void main() { char *s = "hello"; char *p = s; printf("%p\t%p", p, s); } |
| A. | Different address is printed |
| B. | Same address is printed |
| C. | Run time error |
| D. | Nothing |
| Answer» C. Run time error | |
| 31. |
Default storage class if not any is specified for a local variable, is auto |
| A. | true |
| B. | false |
| C. | Depends on the standard |
| D. | None of the mentioned |
| Answer» B. false | |
| 32. |
What is the output of this C code? #include <stdio.h> int main() { printf("Hello World! %d \n", x); return 0; } |
| A. | Hello World! x; |
| B. | Hello World! followed by a junk value |
| C. | Compile time error |
| D. | Hello World! |
| Answer» D. Hello World! | |