** Pre-Placement Paper : Technical Total Question : 40 Time : 30 Min

1. What is output:#include <stdio.h>int main(){

printf(“%d>>%d”,8>>1,4>>1);return 0;

}A) 1 B) 2 C) 4 D)8

2. …….. operator is suitable for putting on a particular bit in a number.

3. Bitwise operator is used to perform operations at ………………………….level .

4. Dynamic memory allocation function available are………….. (a) malloc(). (b) calloc().

(c) both(a)&(b) (d) none5. All static variables are automatically initialized to …………

(a) 0 (b) 1 (c) -1 (d)Both (a) & (b)

6. #include <stdio.h>intmain()

{enum color {red,green,blue};typedefenam color mycolor;mycolor m=red;printf(“%d”,m);return 0;

}A) 1 B) 0 C) red D) error

7. state the statement :a) If malloc() successfully allocate memory then it return s the number of bytes

it has allocated.b) malloc() returns a NULL if it fails to allocate requested memory.c) Bitwise | operator can be used to set multiple bits in a number.d) Bitwise & operator can be used to check if more than one bit in a number is on.

A) TTTF B) FTTT C) TFTF D) FFTT

8. Which of the following is the correct prototype of the malloc() function in c?A) int * malloc(size int);B) char *malloc (char);C) void malloc();D) void * malloc(size_t);

9. C automatically converts any intermediate values to the proper type without loosing any significance.

(a) Implicit conversion. (b) Explicit conversion.(c) both(a)&(b). (d) none.

10. A Microprocessor having 16 bit CPU register can hold …………..(a) int (b) float/double(c) both(a)&(b). (d) none

11. What is output :#include <stdio.h>int main(){

typedefintarr[5];arriarr ={1,2,3,4,5}; int x;for(x=0;x<4;x++)printf(“%d ”,iarr[x]);}

A) 1 2 3 4 B) 1 2 3 4 5 C) Error D) No output

12. Bitwise OR Oprerator is used to Turn On a Particular bit.(a) true. (b)false

13. State the statement :a) Every c program will contain at least one preprocessor directive.b) A header file contains macros, structure declarations and function prototypes.c) A preprocessor directive is a message from programmer to a preprocessor.d) A preprocessor directive is a message from compiler to linker.

A) TTFF B) FTTF C) FTFT D) TFFT

14. Value stored in a CPU register can always be accessed faster than the one who stored in memory.

(a) true (b)false

15. Valid examples of #define statements are :a) #define MAX 200 b) #define X=2.5c)#define N 5, M 10 d) Both (a) & (b)

16. What is output :#include <stdio.h>#define PRINT(int) printf(“%d”,int)int main(){int x=2;PRINT(x);}

A) 2 B) 0 C) Error D) No output

17. #define statements must be end with a semicolon.(a) True (b) False

18. What is output :#include <stdio.h>int main(){

printf(“%x\n”,-1<<3);}

A) Ffff B)fff8 C) 0 D) No output

19. Valid examples of const statements are :(a) constint MAX 50 (b) constintclass_size =40;

(c) const ARRAY 11 (d) None

20. Lacal variable which is stored in the ………………(a) auto (b) static (c) extern (d) register

21. …….. operator is suitable for turning off a particular bit in a number.

22. main(){

int k=0;k&=~(1<<5);

printf("%x\t",k); k|=(1<<2);printf("%x\t",k);k^=(1<<14);printf("%x\n",k); }a. 0, 14, 4004 b. 4,0,404 c. 0,4,4004 d. None of these

23. main() {inti,bit, num=0x238E;unsignedint mask;for(i=5;i>0;i--) {mask<<1;

bit=(num&mask)>>i;

printf("%d",bit);

}a. 00012 b. compilation error c. 0000012 d. Run time error

24. Global variable known to all functions in the file.(a) auto (b) register (c) extern (d) static

25. What are the way of storing data in file………………………………………………………..

26. Local variable which exists and retains its value even after the control is transferred to the calling function.

(a) auto (b) register (c) extern (d) static27. typedef can create a new file.

(a) True (b) False28. The symbol of Token passing operator is

(a) & (b) # (c) $ (d) ##29. The symbol of Stringizing operator is

(a) & (b) # (c) $ (d) ##30. All preprocessor directives begin with…………….

(a) & (b) # # (c) ## (d)#31. Bitwise operators may not be applied to ….…………

(a) int and float (b) float and double (c) int and char (d) int and double32. The symbol of bitwise left shift operator is

(a) >> (b) <<< (c) ^ (d) None

33. #define A -2 #define B -100main(){int ratio=A/B; printf("%d ",ratio);}a. -2 b. 2 c. 0 d. compilation error

34. #define MAN(x, y) ((x)>(y)) ? (x):(y);int main() {

int i=, j=5, k=0; k = MAN(++i, j++);printf("%d, %d, %d\n", i, j, k);}a. Compilation error b. 1,7,6 c. 0, 0, 0 d. garbage value

35. #define SQUARE(x) x*xint main(){float s=0, u=0, t=0, a; a = 2*(s-u*t)/SQUARE(t);printf("Result = %f", a);}a. Compilation error b. -1.#IND00 c. garbage value d. none

36. #define JOIN(s1, s2) printf("%s=%ccccs %s=%s%d \n", #s1, s1, #s2, s2);int main(){char *str1="Mca";char *str2="Third";JOIN(str1, str2);}a. Str1= mca str2= third b. str1=cccs str2=third0c. str1=cccs str2=Third0 d. garbage value

37. #define PRINT(int) printf("int=d, ", int);int main(){int x=2, y=3, z=4; PRINT(x); PRINT(y);PRINT(z);}a. 2,3,4 b. 0, 0 ,0 c. d,d,d d. garbage value

38. #define FUN(i, j) i##jint main(){int va1=10;int va12=20;printf("%d\n", FUN(va1, 2)); }a. 0 b. 20 c. 16. D. compilation error

39. #define FUN(arg) do\{\\if(arg)\printf("MCA STUDENT...", "\n");\}while(--i)int main(){int i=2;FUN(i<3);}a. MCA STUDENT b. MCA STUDENT MCA STUDENT c. compilation eror d. None of these

40. If the file to be included doesn't exist, the preprocessor flashes an error message.

a. true b. false