C-Programming |Gate-2008|
1. Which combination of the integer variables x, y and z makes the variable a get the value 4 in the following expression? a = (x > y)? ((x > z)? x : z): ((y > z)? y : z) [GATE – 2008]
a. x = 3, y = 4, z = 2
b. x = 6, y = 5, z = 3
c. x = 6, y = 3, z = 5
d. x = 5, y = 4, z = 5
Answer : a)
2. What is printed by the following C program?
int f (int x, int * py, int * *ppz)
void main ( )
{
{ int y, z;
int c, * b, * *a; * *ppz + = 1; z = *ppz;
c = 4; b = &c; a = &b; * py + = 2; y = *py;
pr int f (” %d”, f (c, b, a)); x + = 3;
}
return x + y + z;
} [GATE – 2008]
a. 18
b. 19
c. 20
d. 21
Answer : b)
3. Choose the correct option to fill ? 1 and ? 2 so that the program below prints an input string in reverse order. Assume that the input string is terminated by a newline void recerse (void){ int c; if (?1)reverse ( ); ? 2 } main ( ) { pr int f (“Enter Text “); pr int f (“\ n “); reverse ( );pr int f (“\ n “); } [GATE – 2008]
a. ?1 is (getchar( ) != ’\n’)
?2 is getchar(c);
b. ?1 is (c = getchar( ) ) != ’\n’)
?2 is getchar(c);
c. ?1 is (c != ’\n’)
?2 is putchar(c);
d. ?1 is ((c = getchar()) != ’\n’)
?2 is putchar(c);
Answer : d)
4. Match the programming paradigms and languages given in the following table. [GATE – 2008]
| Paradigms | Languages | ||
| I) | Imperative | a) | Prolog |
| II) | Object oriented | b) | Lisp |
| III) | Functional | c) | C,Fortran 77, Pascal |
| IV) | Logic | d) | C++ , Smalltalk, Java |
a. I-c, II-d, III-b, IV-a
b. I-a, II-d, III-c, IV-b
c. I-d, II-c, III-b, IV-a
d. I-c, II-d, III-a, IV-b
Answer : a)
5. What is the output printed by the following C code? [GATE – 2008]
# include <stdio.h>int main (){ char a [6] = "world"; int i, j; for (i = 0, j = 5; i < j; a [i++] = a [j--]); printf ("%sn", a);} /* Add code here. Remove these lines if not writing code */ |
a. Dlrow
b. Null String
c. Dlrld
d. worow
Answer : b)
6. Consider the C program below. What does it print? [GATE – 2008]
# include <stdio.h># define swapl (a, b) tmp = a; a = b; b = tmp void swap2 ( int a, int b){ int tmp; tmp = a; a = b; b = tmp; } void swap3 (int*a, int*b) { int tmp; tmp = *a; *a = *b; *b = tmp; }int main (){ int num1 = 5, num2 = 4, tmp; if (num1 < num2) {swap1 (num1, num2);} if (num1 < num2) {swap2 (num1 + 1, num2);} if (num1 >= num2) {swap3 (&num1, &num2);} printf ("%d, %d", num1, num2);} /* Add code here. Remove these lines if not writing code */ |
a. 5,5
b. 5,4
c. 4,5
d. 4,4
Answer : c)
7. Consider the C program given below. What does it print? [GATE – 2008]
#include <stdio.h> int main (){ int i, j; int a [8] = {1, 2, 3, 4, 5, 6, 7, 8}; for(i = 0; i < 3; i++) { a[i] = a[i] + 1; i++; } i--; for (j = 7; j > 4; j--) { int i = j/2; a[i] = a[i] - 1; } printf ("%d, %d", i, a[i]); } /* Add code here. Remove these lines if not writing code */ |
a. 2,3
b. 2,4
c. 3,2
d. 3,3
Answer : c)
8. C program is given below:
# include <stdio.h> int main (){ int i, j; char a [2] [3] = {{'a', 'b', 'c'}, {'d', 'e', 'f'}}; char b [3] [2]; char *p = *b; for (i = 0; i < 2; i++) { for (j = 0; j < 3; j++) { *(p + 2*j + i) = a [i] [j]; } }} /* Add code here. Remove these lines if not writing code */ |
What should be the contents of the array b at the end of the program? [GATE – 2008]
a. ab
cd
ef
b. ad
be
cf
c. ac
eb
df
d. ae
dc
bf
Answer : b)
9. Consider the code fragment written in C below :
void f (int n) { if (n <=1) { printf ("%d", n); } else { f (n/2); printf ("%d", n%2); } } |
What does f(173) print? [GATE – 2008]
a. 010110101
b. 010101101
c. 10110101
d. 10101101
Answer : d)
10. Consider the code fragment written in C below : [GATE – 2008]
void f (int n) { if (n <= 1) { printf ("%d", n); } else { f (n/2); printf ("%d", n%2); }} |
Which of the following implementations will produce the same output for f(173) as the above code? P1
void f (int n){ if (n/2) { f(n/2); } printf ("%d", n%2);} |
P2
void f (int n){ if (n <=1) { printf ("%d", n); } else { printf ("%d", n%2); f (n/2); } } |
a. Both P1 and P2
b. P2 only
c. P1 only
d. Neither P1 nor P2
Answer : c)
C-Programming |Gate-2008|