Test Paper 1.txt

1. What is the output of this C code? #include

<stdio.h>

int main() { char chr; chr = 128; printf(�%d\n�, chr); return 0; } o A ) 128 o B ) -128 o C ) Depends on the compiler o D ) None of the mentioned 2. What is the output of this C code? #include <stdio.h> int main() { float x = �a�; printf(�%f�, x); return 0; } o A ) a o B ) run time error o C ) a.0000000 o D ) 97.000000 3. All keywords in C are in o A ) LowerCase letters o B ) UpperCase letters o C ) CamelCase letters o D ) None 4. Variable name resolving (number of significant characters for uniqueness of variable) depends on o A ) Compiler and linker implementations o B ) Assemblers and loaders implementations o C ) C language o D ) None 5. Which is valid C expression? o A ) int my_num = 100,000; o B ) int my_num = 100000; o C ) int my num = 1000;

o D ) int $my_num = 10000; 6. Which of the following is not a valid variable name declaration? o A ) float PI = 3.14; o B ) double PI = 3.14; o C ) int PI = 3.14; o D ) #define PI 3.14; 7. Which data type is most suitable for storing a number 65000 in a 32-bit system? o A ) short o B ) int o C ) long o D ) double 8. Comment on the output of this C code? #include <stdio.h> int main() { float f1 = 0.1; if (f1 == 0.1) printf(�equal\n�); else printf(�not equal\n�); } o A ) equal o B ) not equal o C ) Output depends on compiler o D ) None of the mentioned 9. Which of the following is true for variable names in C? o A ) They can contain alphanumeric characters as well as special characters o B ) It is not an error to declare a variable to be one of the keywords(like goto, static) o C ) Variable names cannot start with a digit o D ) Variable can be of any length 10. What will happen if the below program is executed? #include <stdio.h> int main() { int main = 3; printf(�%d�, main); return 0; }

o A ) It will cause a compile-time error o B ) It will cause a run-time error o C ) It will run without any error and prints 3 o D ) It will experience infinite looping 11. Which of the following is not a valid C variable name? o A ) int variable_count o B ) int number o C ) float rate o D ) int $main 12. The format identifier �%i� is also used for _____ data type? o A ) char o B ) int o C ) float o D ) double 13. Consider on following declaration: (i)

short i=10;

(ii)

static i=10;

(iii) unsigned i=10; (iv) const i=10; o A ) Only (iv) is incorrect o B ) Only (ii) and (iv) are incorrect o C ) Only (ii),(iii) and (iv) are correct o D ) All are correct declaration 14. What is the output of this C code? #include <stdio.h> int main() { printf(�Hello World! %d \n�, x); return 0; } o o o o

A B C D

) ) ) )

Hello World! x; Hello World! followed by a junk value Compile time error Hello World!

15. What is the output of this C code? #include <stdio.h> int main() { int y = 10000;

int y = 34; printf(�Hello World! %d\n�, y); return 0; } o o o o 16. Which is

A B C D

) ) ) )

Compile time Hello World! Hello World! Hello World!

error 34 1000 followed by a junk value

correct with respect to size of the datatypes? A ) char > int > float B ) int > char > float C ) char < int < double D ) double > char > int

17. What is the size of an int data type? A ) 4 Bytes B ) 8 Bytes C ) Depends on the system/compiler D ) Cannot be determined 18. Literal means ? A ) a string. B ) a string constant. C ) a character. D ) an alphabet. 19. Which of the following cannot be a variable name in C? A ) Volatile B ) true C ) friend D ) export 20. Which of the following is a User-defined data type? A ) typedef int Boolean; B ) typedef enum {Mon, Tue, Wed, Thu, Fri} Workdays; C ) struct {char name[10], int age}; D ) all of the mentioned