MCQOPTIONS
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MCQOPTIONS
This section includes 22 Mcqs, each offering curated multiple-choice questions to sharpen your C Multiple Choice knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
_____ is an optional argument that gives the maximum number of characters to be read. |
| A. | modifiers |
| B. | width |
| C. | precision |
| D. | length |
| Answer» C. precision | |
| 2. |
Explain the format string "%5d%s %c" |
| A. | five characters as a decimal integer, then reads the remaining as a string and then scans the first non-whitespace character |
| B. | compile error |
| C. | run-time error |
| D. | read first five characters as a decimal and ignore the rest |
| Answer» B. compile error | |
| 3. |
A fatal error will be generated if the format string is ended with a white space character. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 4. |
What form the data must be entered for the given C code? |
| A. | 6 9 |
| B. | 6/9 |
| C. | compile error |
| D. | run-time errorView Answer |
| Answer» C. compile error | |
| 5. |
The syntax of the scanf() is scanf(“control string “, arg1,arg2,arg3,….,argn); the prototype of control string is ____________ |
| A. | [=%[width][modifiers]type=] |
| B. | [=%[modifiers][width]type=] |
| C. | [=%[width] [modifiers]] |
| D. | [width][modifiers] |
| Answer» B. [=%[modifiers][width]type=] | |
| 6. |
What is the meaning of the following C statement? |
| A. | read all character except new line |
| B. | read all characters |
| C. | read only new line character |
| D. | syntax errorView Answer |
| Answer» B. read all characters | |
| 7. |
What does the C statement given below says? |
| A. | read string with minimum 7 characters. |
| B. | read string with maximum 7 characters |
| C. | read string exactly to 7 characters |
| D. | read string with any number of charactersView Answer |
| Answer» C. read string exactly to 7 characters | |
| 8. |
scanf() is a predefined function in______header file. |
| A. | stdlib. h |
| B. | ctype. h |
| C. | stdio. h |
| D. | stdarg. h |
| Answer» D. stdarg. h | |
| 9. |
Control string specifies the type and format of the data that has to be obtained from the keyboard. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 10. |
If the user enters 1 s 3.2, what value will be returned by the scanf()? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | no return valueView Answer |
| Answer» B. 2 | |
| 11. |
If the user enters 1 3.2 s, what value will be returned by the scanf()? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | No return valueView Answer |
| Answer» D. No return valueView Answer | |
| 12. |
6_¬¨ Ć9?$# |
| A. | 6/9 |
| B. | compile error |
| C. | run-time error |
| Answer» C. run-time error | |
| 13. |
SCANF()_IS_A_PREDEFINED_FUNCTION_IN______HEADER_FILE.?$ |
| A. | stdlib. h |
| B. | ctype. h |
| C. | stdio. h |
| D. | stdarg. h |
| Answer» B. ctype. h | |
| 14. |
What is the qualifying input for the type specifier G? |
| A. | floating point numbers |
| B. | floating point numbers in exponential format |
| C. | floating point numbers in the shorter of exponential format |
| D. | not a type specifier |
| Answer» C. floating point numbers in the shorter of exponential format | |
| 15. |
read data for two |
| A. | generate error |
| B. | read data for three |
| C. | nothing can be said |
| Answer» B. read data for three | |
| 16. |
What is the prototype of scanf function? |
| A. | scanf("controlstring",arg1,arg2,arg3,….,argn); |
| B. | scanf("control string", variable list); |
| C. | scanf(" varible list,", control string); |
| D. | scanf("arg1,arg2,arg3,….,argn", control string); |
| Answer» D. scanf("arg1,arg2,arg3,‚Äö√Ñ√∂‚àö√묨‚àÇ.,argn", control string); | |
| 17. |
compile error |
| A. | run-time error |
| B. | good |
| C. | logical error |
| Answer» C. logical error | |
| 18. |
What error will be generated on using incorrect specifier for the datatype being read? |
| A. | compile error |
| B. | run-time error |
| C. | logical error |
| D. | no error |
| Answer» B. run-time error | |
| 19. |
What error will generate if the read and write parameters are not separated by commas? |
| A. | run-time error |
| B. | compile error |
| C. | logical error |
| D. | no error |
| Answer» C. logical error | |
| 20. |
What action is carried out by scanf if a user enters any blank spaces, tabs, and newlines? |
| A. | consider as input |
| B. | ignores it |
| C. | produces error |
| D. | nothing can be said |
| Answer» C. produces error | |
| 21. |
What is the use of symbol * in the control string as shown [=%[*][width] [modifiers] type=]? |
| A. | * is optional and used when the data should be read from the stream but ignored |
| B. | * is not optional, used to read data from the stream but it is not ignored |
| C. | * is not optional, it is used to read data stream but ignored |
| D. | * is optional and used to read data from stream but it is not ignored |
| Answer» B. * is not optional, used to read data from the stream but it is not ignored | |
| 22. |
Select the correct value of i from given options i=scanf("%d %d", &a, &b); |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | No value assigned |
| Answer» C. 3 | |