1
GATE CSE 2012
+2
-0.6
Consider the following C code segment.
int a, b, c = 0;
void prtFun(void);
main( )
{
static int a = 1; /* Line 1 */
prtFun();
a + = 1;
prtFun();
printf("\n %d %d ", a, b);
}
void prtFun(void)
{
static int a=2;   /* Line 2 */
int b=1;
a+ = ++b;
printf("\n %d %d ", a, b);
}
What output will be generated by the given code segment if:
Line 1 is replaced by auto int a = 1;
Line 2 is replaced by register int a = 2;
A
\eqalign{ & 3\,\,1 \cr & 4\,\,1 \cr & 4\,\,2 \cr}
B
\eqalign{ & 4\,\,2 \cr & 6\,\,1 \cr & 6\,\,1 \cr}
C
\eqalign{ & 4\,\,2 \cr & 6\,\,2 \cr & 2\,\,0 \cr}
D
\eqalign{ & 4\,\,2 \cr & 4\,\,2 \cr & 2\,\,0 \cr}
2
GATE CSE 2008
+2
-0.6
What is printed by the following C program?
#include < stdio.h >
int f(int x, int *py, int **ppz)
{
int y, z;
**ppz += 1;
z  = **ppz;
*py += 2;
y = *py;
x += 3;
return x + y + z;
}

void main()
{
int c, *b, **a;
c = 4;
b = &c;
a = &b;
printf( "%d", f(c,b,a));
getchar();
}
A
18
B
19
C
21
D
22
3
GATE CSE 2006
+2
-0.6
Consider this C code to swap two integers and these five statements:
void swap(int *px, int *py)
{
*px = *px - *py;
*py = *px + *py;
*px = *py - *px;
}
S1: will generate a compilation error

S2: may generate a segmentation fault at runtime depending on the arguments passed

S3: correctly implements the swap procedure for all input pointers referring to integers stored in memory locations accessible to the process

S4: implements the swap procedure correctly for some but not all valid input pointers

S5: may add or subtract integers and pointers.
A
S1
B
S2 and S3
C
S2 and S4
D
S2 and S5
4
GATE CSE 2004
+2
-0.6
Consider the following C program segment:
char p;
char *s = "string";
int length = strlen(s);
for(i=0; i < length; i++)
p[i] = s[length-i];
printf("%s",p);

The output of the program is
A
gnirts
B
string
C
gnirt
D
no output is printed
GATE CSE Subjects
Discrete Mathematics
Programming Languages
Theory of Computation
Operating Systems
Digital Logic
Computer Organization
Database Management System
Data Structures
Computer Networks
Algorithms
Compiler Design
Software Engineering
Web Technologies
General Aptitude
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