1. What will be the output of the following program, assuming that data type short takes 2 bytes for storage? struct node { unsigned char bit1 : 1; unsigned char bit2 : 1; unsigned short bit3 : 7; } node1;
main() { int size = sizeof(node1); printf("%d", size); }
Answer
Correct Answer:
2
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2. The declaration int *(*p)[10] indicates:
Answer
Correct Answer:
p is a pointer to an array of integer pointers
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3. What will be printed on the standard output as a result of the following code snippet? void main() { int i,j,k; i=4; j=30; k=0; k=j++/i++; ++k; printf("%d %d %d",i,j,k); }
Answer
Correct Answer:
5 31 8
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4. Which of the following is the correct way of initializing a two-dimensional array?
Answer
Correct Answer:
a, b and c
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5. In order to read structures/records from a file, which function will you use?
Answer
Correct Answer:
fread()
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6. Which of the following sets of conversion statements may result in the loss of data?
Answer
Correct Answer:
int i; char c; c=i; i=c;
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7. What would be printed on the standard output as a result of the following code snippet? main() { char *s="Hello World"; char s1[20], s2[20]; int len = sscanf(s,"%s",s1); printf("%s : %d", s1, len); }
Answer
Correct Answer:
Hello : 1
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8. Which is/are the type/s of memory allocation that needs/need the programmer to take care of memory management?
Answer
Correct Answer:
Dynamic memory allocation
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9. Suppose there is a file a.dat which has to be opened in the read mode using the FILE pointer ptr1, what will be the correct syntax?
Answer
Correct Answer:
ptr1 = fopen("a.dat","r");
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10. Given the following array: char books[][40]={ "The Little World of Don Camillo", "To Kill a Mockingbird", "My Family and Other Animals", "Birds, Beasts and Relatives" }; what would be the output of printf("%c",books[2][5]);?
Answer
Correct Answer:
m
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11. Which function will you use to position the file pointer at the beginning of the file?
Answer
Correct Answer:
a or b
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12. What would be printed on the standard output as a result of the following code snippet? main() { int arr[10]; int a = sizeof(arr); printf("%d\n",a); return 0; }
Answer
Correct Answer:
40
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13. What will happen if you assign a value to an element of an array the subscript of which exceeds the size of the array?
Answer
Correct Answer:
You will get an error message from the compiler
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14. Which function returns the current pointer position within a file?
Answer
Correct Answer:
ftell()
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15. Which of the following is not a string function?
Answer
Correct Answer:
strcomp()
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16. Which function will convert a string into an integer?
Answer
Correct Answer:
atoi()
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17. What is the return value in case a file is not opened successfully by using fopen()?
Answer
Correct Answer:
NULL
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18. What would be printed on the standard output as a result of the following code snippet? main( ) { char *str[ ] = { "Manish" "Kumar" "Choudhary" }; printf ( "\nstring1 = %s", str[0] ); printf ( "\nstring2 = %s", str[1] ); printf ( "\nstring3 = %s", str[2] ); }
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19. What is the return type of the following function declaration? func(char c);
Answer
Correct Answer:
void
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20. What would be the output of the following code snippet? int b = 5; main() { void addup (int b); int i; for(i=1; i<=5; i++) addup(1); return 0; } void addup (int b) { static int v1; v1 = v1+b; printf("%d ", v1); }
Answer
Correct Answer:
1 2 3 4 5
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21. Identify the incorrect statement.
Answer
Correct Answer:
Memory is reserved when a structure label is defined
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22. Given the array: int num[3][4]= { {3,6,9,12}, {15,25,30,35}, {66,77,88,99} }; what would be the output of *(*(num+1)+1)+1?
Answer
Correct Answer:
26
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23. What would be printed on the standard output as a result of the following code snippet? #include main() { unsigned char a=255; a = a+1; printf("%d",a); return 0; }
Answer
Correct Answer:
0
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24. What would be printed on the standard output as a result of the following code snippet? main() { void addup (int b); addup(b); return 0; } int b = 5; void addup (int b) { static int v1; v1 = v1+b; printf("%d ", v1); }
Answer
Correct Answer:
Will result in Compilation Error
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25. What would be printed on the standard output as a result of the following code snippet? #define max(a, b) ((a) > (b)?(a):(b)) main() { int a=4; float b=4.5; printf("%.2f\n",max(a, b)); }
Answer
Correct Answer:
4.50
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26. If a two dimensional array arr[4][10](an array with 4 rows and 10 columns) is to be passed in a function, which of the following would be the valid parameters in the function definition?
Answer
Correct Answer:
fn(int arr[4][10])
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27. Is the following statement correct? If not, why not? If yes, what is the size of the array? int array[][3] = { {1,2}, {2,3}, {3,4,2} };
Answer
Correct Answer:
Yes, the size is three columns by three rows
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28. Which of the following statements will result in a compilation error?
Answer
Correct Answer:
int n=5, x; x= ++n++;
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29. Which of the following comparison statements will be true if an integer is 16 bits and a long is 32 bits on a machine?
Answer
Correct Answer:
-1L < 1U
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30. What will be printed on the standard output as a result of the following code snippet? void main() { char arr[] = {"R","A","M","\0"}; printf("%d",strlen(arr)); }
Answer
Correct Answer:
3
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31. What will be printed on the standard output as a result of the following code snippet? void main() { char arr[] = {"R","A","M"}; printf("%d",strlen(arr)); }
Answer
Correct Answer:
Cannot be determined
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32. Which standard function is used to deallocate memory allocated by the malloc() function?
Answer
Correct Answer:
free
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33. What would be printed on the standard output as a result of the following code snippet? char i = "A"; char *j; j = & i; *j = *j + 32; printf("%c",i);
Answer
Correct Answer:
a
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34. Which of the following is not a type of operator ?
Answer
Correct Answer:
Rational
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35. An array is defined with the following statement in a file, file1.c
int a[ ] = { 1, 2, 3, 4, 5, 6 };
In another file, file2.c, the following code snippet is written to use the array a: extern int a[]; int size = sizeof(a); What is wrong with the above code snippet?
Answer
Correct Answer:
An extern array of unspecified size is an incomplete type. The size of the operator during compile time is unable to learn the size of an array that is defined in another file
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36. What would be printed on the standard output as a result of the following code snippet? int Recur(int num) { if(num==1 || num==0) return 1; if(num%2==0) return Recur(num/2)+2; else return Recur(num-1)+3; }
int main() { int a=9; printf("%d\n", Recur(a)); return 0; }
Answer
Correct Answer:
10
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37. Which of the following is/are the correct signature/s of main with command line arguments?
Answer
Correct Answer:
int main(int argc, char **argv)
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38. Given the following array: int a[8] = {1,2,3,4,5,6,7,0}; what would be the output of printf("%d",a[4]); ?
Answer
Correct Answer:
5
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39. What will be printed on the standard output as a result of the following code snippet? void main() { int arr[5]={1,2,3,4,5}; printf("%d\n", *(arr+4)); }
Answer
Correct Answer:
5
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40. What will happen when the following code is executed? void main() { char arr1[] = "REGALINT"; char arr2[10] = "REGALINT"; printf("%d,",sizeof(arr1)); printf("%d",sizeof(arr2)); }
Answer
Correct Answer:
9,10
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41. What would be printed on the standard output as a result of the following code snippet? main() { int a[5] = {1,4,5,6,9}; printf("%d\t", *a); //Line 1 printf("%d", *++a); //Line 2 return 0; }
Answer
Correct Answer:
Compilation Error in "Line 2"
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42. What would be printed on the standard output as a result of the following code snippet? #define max(a, b)((a) > (b)?(a):(b)) main() { int a=4, c = 5; printf("%d ", max(a++, c++)); printf("%d %d\n", a,c); }
Answer
Correct Answer:
6 5 7
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43. What would be printed on the standard output as a result of the following code snippet? main() { char *pmessage = "asdfgh"; *pmessage++; printf("%s", pmessage); return 0; }
Answer
Correct Answer:
sdfgh
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44. Which function allocates memory and initializes elements to 0?
Answer
Correct Answer:
calloc()
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45. Which of the following standard functions is used to close a file?
Answer
Correct Answer:
fclose()
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46. Select the correct statement about arrays.
Answer
Correct Answer:
An array declared as A[100][100] can hold a maximum of 10000 elements
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47. What will be printed on the standard output as a result of the following code snippet? void func() { static int i = 1; int j = 1; i++; j++; printf("%d %d ",i,j); }
void main() { func(); func(); func(); }
Answer
Correct Answer:
2 2 3 2 4 2
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48. What does the following function do? int fn(unsigned int x) { int count = 0; for(; x!=0; x&=(x-1)) count++; return count; }
Answer
Correct Answer:
Returns the number of 1 bits(bits having one) in the number x
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49. Which of the following functions is used to extract formatted input from a file?
Answer
Correct Answer:
fscanf()
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50. Which of the following declarations of structures is/are valid? 1) struct node { int count; char *word; struct node next; }Node; 2) struct node { int count; char *word; struct node *next; }Node; 3) struct node { int count; char *word; union u1 { int n1; float f1; }U; }Node;
Answer
Correct Answer:
2,3
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51. What is wrong with the following function prototype statement? int func();
Answer
Correct Answer:
There is nothing wrong with the statement
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52. Which of the following is not a storage type?
Answer
Correct Answer:
global
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53. What will be printed on the standard output as a result of the following code snippet? void main() { int arr[][2] = {1,2,3,4,5,6}; printf("%d",arr[2][1]); }
Answer
Correct Answer:
6
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54. What would be printed on the standard output as a result of the following code snippet? main() { int i=5; char option = 5; switch(option) { case "5": printf("case : 1 \n"); break; case i: printf("case : 2 \n"); break; default: printf("case : 3 \n"); break; } return 0; }
Answer
Correct Answer:
Result in compilation error
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55. Which of the following statements is valid and correct?
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56. The declaration int (*p[5])() means:
Answer
Correct Answer:
p is an array of pointers to functions the return type of which is an integer
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57. What would be printed on the standard output as a result of the following code snippet? main() { enum {red, green, blue = 0, white}; printf("%d %d %d %d", red, green, blue, white); return 0; }
Answer
Correct Answer:
0 1 0 1
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58. What is the function to concatenate two strings?
Answer
Correct Answer:
strcat()
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59. Which of the following is not a valid mode for opening a file?
Answer
Correct Answer:
i
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60. Which function will convert a string into a double precision quantity?
Answer
Correct Answer:
atof()
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61. What would be printed on the standard output as a result of the following code snippet? main() { int n=5, x; x = n++; printf("%d ", x); x = ++n; printf("%d ", x++); printf("%d", x); return 0; }
Answer
Correct Answer:
5 7 8
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62. What will be the output of the following program? #include main() { int n = 5; assert(n > 3); //statement 1 n = n+2; assert(n > 7);//statement 2 return 0; }
Answer
Correct Answer:
Assertion 'n > 7' failed; Program aborts at statement 2
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63. Which of the following file modes would mean read + append?
Answer
Correct Answer:
a+
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64. What will be printed on the standard output as a result of the following code snippet? int funr(int x, int y) { if(x <= 0) { return y; } else { return (1+funr(x-1,y)); } }
void main() { printf("%d",funr(2,3)); }
Answer
Correct Answer:
5
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65. Which of the following is the correct way of initializing a two-dimensional array?
Answer
Correct Answer:
a, b and c
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66. Which header file are methods(or macros) isalpha(), islower() a part of?
Answer
Correct Answer:
ctype.h
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67. What will be the output of following code? int main() { int i; i = 0; for (i = 1; i <2; i++) { i++; printf( "%d", i ); continue; printf( "%d", i ); } return 0; }
Answer
Correct Answer:
2
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68. Read the following two declaration statements. 1. #include 2. #include "stdio.h" Which of the following statements pertaining to the above two statements are correct?
Answer
Correct Answer:
For statement 1, the header file will be searched in the standard system directories such as
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69. What does the argv[0] represent?
Answer
Correct Answer:
The program name
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70. What would be printed on the standard output as a result of the following code snippet? char *str1 = "Hello World"; strcat(str1, "!"); printf("%s", str1);
Answer
Correct Answer:
The code snippet will throw a compilation error
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71. What will be printed on the standard output as a result of the following code snippet? void main() { int num1 = 30, num2 = 4; float result; result = (float)(num1/num2); printf("%.2f", result); return 0; }
Answer
Correct Answer:
7 7.00 7.000000
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72. Which function will you use to write a formatted output to the file?
Answer
Correct Answer:
fprintf()
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73. By which file function you can position the file pointer in accordance with the current position?
Answer
Correct Answer:
fseek()
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