C-DAC C Programming Question Paper 2020 Fundamentals of Programming.
void main()
{
printf(“n10!=9 : %5d”,10!=9);
}
1<——ans 0 Error None of these options 17. #include
void main()
{
int x=10;
(x
void main()
{
int a=14;
a += 7;
a -= 5;
a *= 7;
printf(“n%d”,a);
}
112<——ans 98 89 None of these options 20. What is the output of the following code? #include
#define T t
void main()
{
char T = `T`;
printf(“n%ct%cn”,T,t);
}
Error
T t
T T
t t21. The statement that prints out the character set from A-Z, is
for( a = `z`; a < `a`; a = a – 1) printf(“%c”, &a); for( a = `a`; a <= `z`; a = a + 1 printf(“%c”, &a); for( a = `A`; a <= `Z`; a = a + 1)<—-Ans printf(“%c”, a); for( a = `Z`; a <= `A`; a = a + 1) printf(“%c”, a); 22. The statement which prints out the values 1 to 10 on separate lines, is for( count = 1; count <= 10; count = count + 1) printf(“%dn”,count); for( count = 1; count 10; count = count + 1) printf(“%dn”,count);23. What does the term `call-by-reference` refer to?
Passing a copy of a variable into a function. Passing a pointer to a variable into a function. <——ans Choosing a random value for a variable. A function that does not return any values. 24. What is the output of the following code? #include
void swap(int&, int&);
void main()
{
int a = 10,b=20;
swap (a++,b++);
printf(“n%dt%dt”,a, b);
}
void swap(int& x, int& y)
{
x+=2;
y+=3;
}
14, 24
11, 21 <——ans 10, 20 Error 25. What is the output of the following program code #include
void abc(int a[])
{
a++;
a[1]=612;
}
main()
{
char a[5];
abc(a);
printf(“%d”,a[4]);
}
100
612
Error<——ans None of these options 26. which of the following is true about recursive function i. it is also called circular definition ii. it occurs when a function calls another function more than once iii. it occurs when a statement within the function calls the function itself iv. a recursive function cannot have a return statement within it” i and iii<——ans i and ii ii and iv i, iii and iv 27.What will happen if you assign a value to an element of an array whose subscript exceeds the size of the array? The element will be set to 0 Nothing, its done all the time Other data may be overwritten Error message from the compiler 28. What is the output of the following code? #include
void main()
{
int arr[2][3][2]={{{2,4},{7,8},{3,4},}, {{2,2},{2,3},{3,4}, }}; printf(“n%d”,**(*arr+1)+2+7);
}
16 <——ans 7 11 Error 29. If int s[5] is a one dimensional array of integers, which of the following refers to the third element in the array? *( s + 2 ) <——ans *( s + 3 ) s + 3 s + 2 30. #include”stdio.h” main() { int *p1,i=25; void *p2; p1=&i; p2=&i; p1=p2; p2=p1; printf(“%d”,i); } The output of the above code is : Program will not compile <——ans 25 Garbage value Address of I 31. What is the output of the following code? void main() { int i = 100, j = 200; const int *p=&i; p = &j; printf(“%d”,*p); } 100 200 <——ans 300 None of the above 32. void main() { int i=3; int *j=&i; clrscr(); printf(“%d%d”,++*j,*(&i)); } What is the output of this program? 3 3 4 3 <——ans 4,address of i printed Error:Lvalue required 33. What is the output of the following code? #include
void main()
{
int arr[] = {10,20,30,40,50};
int *ptr = arr;
printf(“n %dt%dt”,*ptr++,*ptr);
}
10 20
10 10<——ans 20 20 20 10 34. Which of these are reasons for using pointers? 1.To manipulate parts of an array 2.To refer to keywords such as for and if 3.To return more than one value from a function 4.To refer to particular programs more conveniently 1 & 3 no+1);
}
What is the output of this program?
8 8
8 9 <——ans 9 8 8 , unpredictable 36. During initializing a union Only one member can be initialised. All the members will be initialised. Initialisation of a union is not possible.<——ans None of these options 37. Self referential structure is one a. Consisting the structure in the parent structure b. Consisting the pointer of the structure in the parent structure Only a Only b Both a and b Neither a nor b 38. Individual structure member can be initialized in the structure itself True False Compiler dependent None of these options 39. Which of the following is the feature of stack? All operations are at one end It cannot reuse its memory All elements are of different data types Any element can be accessed from it directly<——ans 40. When stacks are created Are initially empty<——ans Are initialized to zero Are considered full None of these options 41. What is time required to insert an element in a stack with linked implementation? (1) (log2n)<——ans (n) (n log2n) 42. Which of the following is the feature of stack? All operations are at one end It cannot reuse its memory All elements are of different data types Any element can be accessed from it directly<——ans 43. Time taken for addition of element in queue is (1) (n) (log n)<——ans None of these options 44. When is linear queue said to be empty ? Front==rear Front=rear-1 Front=rear+1 Front=rear<——ans 45. When queues are created Are initially empty<——ans Are initialized to zero Are considered full None of the above 46. What would be the output of the following program? #include
main()
{
printf(“n%c”, “abcdefgh”[4]);
}
abcdefgh
d
e <——ans error 47. Select the correct C code which will read a line of characters(terminated by a n) from input_file into a character array called buffer. NULL terminate the buffer upon reading a n. int ch, loop = 0; ch = fgetc( input_file ); while( (ch != `n`)&& (ch != EOF) ){buffer[loop] = ch; loop++; ch = fgetc(input_file );} buffer[loop] = NULL; int ch, loop = 0; ch = fgetc( input_file ); while( (ch = “n”)&& (ch = EOF)) { buffer[loop] = ch; loop–; ch = fgetc(]input_file ); } buffer[loop]= NULL; int ch, loop = 0; ch = fgetc( input_file ); while( (ch “n”)&& (ch != EOF) ) { buffer[loop] = ch; loop++; ch = fgetc(input_file ); } buffer[loop] = -1;None of the above48. What is the output of the following code ?
void main()
{
int a=0;
int b=0;
++a == 0 || ++b == 11;
printf(“n%d,%d”,a,b);
}
0, 1
1, 1 <——ans 0, 0 1, 0 49. What is the output of the following program? #define str(x)#x #define Xstr(x)str(x) #define oper multiply void main() { char *opername=Xstr(oper); printf(“%s”,opername); } opername Xstr multiply <——ans Xstr 50. What is the output of the following code ? #include
#include
void main()
{
char *a = “C-DACACTSn”; printf(“%sn”,a); }
C-DAC ACTS
ACTS
C-DAC <——ans None of these 51. #include
void main()
{
while (1)
{if (printf(“%d”,printf(“%d”)))
break;
else
continue;
}
}
The output is
Compile time error
Goes into an infinite loop
{
printf(“n10!=9 : %5d”,10!=9);
}
1<——ans 0 Error None of these options 17. #include
void main()
{
int x=10;
(x
void main()
{
int a=14;
a += 7;
a -= 5;
a *= 7;
printf(“n%d”,a);
}
112<——ans 98 89 None of these options 20. What is the output of the following code? #include
#define T t
void main()
{
char T = `T`;
printf(“n%ct%cn”,T,t);
}
Error
T t
T T
t t21. The statement that prints out the character set from A-Z, is
for( a = `z`; a < `a`; a = a – 1) printf(“%c”, &a); for( a = `a`; a <= `z`; a = a + 1 printf(“%c”, &a); for( a = `A`; a <= `Z`; a = a + 1)<—-Ans printf(“%c”, a); for( a = `Z`; a <= `A`; a = a + 1) printf(“%c”, a); 22. The statement which prints out the values 1 to 10 on separate lines, is for( count = 1; count <= 10; count = count + 1) printf(“%dn”,count); for( count = 1; count 10; count = count + 1) printf(“%dn”,count);23. What does the term `call-by-reference` refer to?
Passing a copy of a variable into a function. Passing a pointer to a variable into a function. <——ans Choosing a random value for a variable. A function that does not return any values. 24. What is the output of the following code? #include
void swap(int&, int&);
void main()
{
int a = 10,b=20;
swap (a++,b++);
printf(“n%dt%dt”,a, b);
}
void swap(int& x, int& y)
{
x+=2;
y+=3;
}
14, 24
11, 21 <——ans 10, 20 Error 25. What is the output of the following program code #include
void abc(int a[])
{
a++;
a[1]=612;
}
main()
{
char a[5];
abc(a);
printf(“%d”,a[4]);
}
100
612
Error<——ans None of these options 26. which of the following is true about recursive function i. it is also called circular definition ii. it occurs when a function calls another function more than once iii. it occurs when a statement within the function calls the function itself iv. a recursive function cannot have a return statement within it” i and iii<——ans i and ii ii and iv i, iii and iv 27.What will happen if you assign a value to an element of an array whose subscript exceeds the size of the array? The element will be set to 0 Nothing, its done all the time Other data may be overwritten Error message from the compiler 28. What is the output of the following code? #include
void main()
{
int arr[2][3][2]={{{2,4},{7,8},{3,4},}, {{2,2},{2,3},{3,4}, }}; printf(“n%d”,**(*arr+1)+2+7);
}
16 <——ans 7 11 Error 29. If int s[5] is a one dimensional array of integers, which of the following refers to the third element in the array? *( s + 2 ) <——ans *( s + 3 ) s + 3 s + 2 30. #include”stdio.h” main() { int *p1,i=25; void *p2; p1=&i; p2=&i; p1=p2; p2=p1; printf(“%d”,i); } The output of the above code is : Program will not compile <——ans 25 Garbage value Address of I 31. What is the output of the following code? void main() { int i = 100, j = 200; const int *p=&i; p = &j; printf(“%d”,*p); } 100 200 <——ans 300 None of the above 32. void main() { int i=3; int *j=&i; clrscr(); printf(“%d%d”,++*j,*(&i)); } What is the output of this program? 3 3 4 3 <——ans 4,address of i printed Error:Lvalue required 33. What is the output of the following code? #include
void main()
{
int arr[] = {10,20,30,40,50};
int *ptr = arr;
printf(“n %dt%dt”,*ptr++,*ptr);
}
10 20
10 10<——ans 20 20 20 10 34. Which of these are reasons for using pointers? 1.To manipulate parts of an array 2.To refer to keywords such as for and if 3.To return more than one value from a function 4.To refer to particular programs more conveniently 1 & 3 no+1);
}
What is the output of this program?
8 8
8 9 <——ans 9 8 8 , unpredictable 36. During initializing a union Only one member can be initialised. All the members will be initialised. Initialisation of a union is not possible.<——ans None of these options 37. Self referential structure is one a. Consisting the structure in the parent structure b. Consisting the pointer of the structure in the parent structure Only a Only b Both a and b Neither a nor b 38. Individual structure member can be initialized in the structure itself True False Compiler dependent None of these options 39. Which of the following is the feature of stack? All operations are at one end It cannot reuse its memory All elements are of different data types Any element can be accessed from it directly<——ans 40. When stacks are created Are initially empty<——ans Are initialized to zero Are considered full None of these options 41. What is time required to insert an element in a stack with linked implementation? (1) (log2n)<——ans (n) (n log2n) 42. Which of the following is the feature of stack? All operations are at one end It cannot reuse its memory All elements are of different data types Any element can be accessed from it directly<——ans 43. Time taken for addition of element in queue is (1) (n) (log n)<——ans None of these options 44. When is linear queue said to be empty ? Front==rear Front=rear-1 Front=rear+1 Front=rear<——ans 45. When queues are created Are initially empty<——ans Are initialized to zero Are considered full None of the above 46. What would be the output of the following program? #include
main()
{
printf(“n%c”, “abcdefgh”[4]);
}
abcdefgh
d
e <——ans error 47. Select the correct C code which will read a line of characters(terminated by a n) from input_file into a character array called buffer. NULL terminate the buffer upon reading a n. int ch, loop = 0; ch = fgetc( input_file ); while( (ch != `n`)&& (ch != EOF) ){buffer[loop] = ch; loop++; ch = fgetc(input_file );} buffer[loop] = NULL; int ch, loop = 0; ch = fgetc( input_file ); while( (ch = “n”)&& (ch = EOF)) { buffer[loop] = ch; loop–; ch = fgetc(]input_file ); } buffer[loop]= NULL; int ch, loop = 0; ch = fgetc( input_file ); while( (ch “n”)&& (ch != EOF) ) { buffer[loop] = ch; loop++; ch = fgetc(input_file ); } buffer[loop] = -1;None of the above48. What is the output of the following code ?
void main()
{
int a=0;
int b=0;
++a == 0 || ++b == 11;
printf(“n%d,%d”,a,b);
}
0, 1
1, 1 <——ans 0, 0 1, 0 49. What is the output of the following program? #define str(x)#x #define Xstr(x)str(x) #define oper multiply void main() { char *opername=Xstr(oper); printf(“%s”,opername); } opername Xstr multiply <——ans Xstr 50. What is the output of the following code ? #include
#include
void main()
{
char *a = “C-DACACTSn”; printf(“%sn”,a); }
C-DAC ACTS
ACTS
C-DAC <——ans None of these 51. #include
void main()
{
while (1)
{if (printf(“%d”,printf(“%d”)))
break;
else
continue;
}
}
The output is
Compile time error
Goes into an infinite loop
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