|
1.
Struct x
{
int
i;
char
c;
}
union
y{
struct x a;
double d;
};
printf("%d",sizeof(union
y));
a)8
b)5
c)4
d)1
ans:8
2.
struct x{
char
c1;
char
c2;
int
i;
short int
j;
};
struct y{
short int
j;
char
c1;
char
c2;
int i;
};
printf("%d
%d",size of (struct x),size of (struct
y));
a)12
12
b)8
8
c)12
8
d)8
12
ans:a
3.
enum x {a=1,b,c,d,f=60,y}
printf("%d",y);
a)5
b)61
c)6
d)60
ans:b
4
.
#include<stdio.h>
void
main(){
{
# define x
10
}
printf("%d
\n",++x);
}
a)11
b)10
c)compile
error
d)runtime
error
ans:c
5.
#include<stdio.h>
void
main()
{
int
k=2,j=3,p=0;
p=(k,j,k);
printf("%d\n",p);
}
a)2
b)error
c)0
d)3
ans:a
6.
How to typedef a function pointer which takes int as a parameter and
return an int
a)Is
not possible
b)typedef int *funcptr
int;
c)typedef int *
funcptr( int);
d)typedef
int (*funcptr)(int);
ans:d
7.
#include<stdio.h>
void main()
{
int
k=10;
k<<=1;
printf("%d\n",k);
}
a)10
b)0
c)20
d) compilation
error
ans:c
8.
#include<stdio.h>
void
main()
{
int
i=-10;
for(;i;printf("%d\n",i++));
}
a)error
b)prints -10 to
-1
c)infinite
loop
d)does not print
anything
ans:b
9.
#include<stdio.h>
void
main()
{
int
I=65,j=0;
for(;j<26;
i++,j++){
printf("%s\n",
i);
}
}
a)compilation
Error
b)prints A to
Z
c)prints a to
z
d)runtime
error
ans:b
10.
#include<stdio.h>
void
main()
{
unsigned int
i=-1;
printf("%d\n",i);
printf("%u\n",i*-1);
}
a)runtime
error
b)compilation error
c)prints -1 to 1
d)prints 1 and 1
ans:c
11.
#include
<stdio.h>
void
main()
{
int
**I;
int
*j=0;
i=&j;
if (NULL != i&& NULL !=
*i){
printf("I am
here");
}
}
a)prints I am
here
b)does not print
anything
c)compilaton
error
d)runtime
error
ans:b
12
#include<stdio.h>
void
main()
{
int *j=(int
*)0x1000;
printf("%p",j);
}
a)prints-1000
b)runtime
error
c)compilation
error
d)none of the
above
ans:d
13
#include<stdio.h>
void
main()
{
int
a[2][2]={{2},{3}};
printf("%d",a[0][0]);
printf("%d",a[0][1]);
printf("%d",a[1][0]);
printf("%d",a[1][1]);
}
a)
2300
b)2000
c)0030
d)2030
ans:d
14)
#include<stdio.h>
void main(int
x)
{
printf("%d",x)
;
}
if the name of the executable file is abc and the command line is
given as abc xyz what is the
output
a)compilation
error
b)1
c)2
d)undefined
ans:2
15.
#include<stdio.h>
void main(int
argc)
{
char
a[]={'1','2','3',0,'1','2','3'};
printf(a);
}
a) compilation error, b) 123, c) 123 123, d) 1230123
ANS:b
16. #include<stdio.h>
void func(int
*x)
{
x=(int *)
malloc(sizeof(int));
printf("in func:
%p\n",x);
}
void main(int
argc)
{
int
**pp;
int
*p;
pp=(int **) malloc(sizeof(int
*));
p=(int *)
malloc(sizeof((int));
*pp=p;
printf("first:%p
\n",*pp);
func(*pp);
printf("last %p
\n",*pp);
}
assuming the p is equal to 1000 and x is equal to 2000 atfer malloc
calls
a)
1000,2000,1000, b)
1000,2000,2000,
c) 1000,1000,1000 d)
2000,2000,2000
ANS:a
17.
#include<stdio.h>
#define const
const
void main(int
argc)
{
const int
x=0;
}
a) compilation error, b)
runs fine, c)
runtime error, d) none
of these
ANS:b
18.
#include<stdio.h>
void main(int
argc)
{
int
d=1234.5678;
printf("%d",d);
}
a) error, b) 1234.5678,
c) 1234, d) 1235
ANS:c
19.
#include<stdio.h>
void main(int
argc)
{
int
a[]={5,6};
printf("%d",a[1.6]);
}
a)
5, b) runtime
error , c) compilation
error, d)
6
ANS:d
20.
#include<stdio.h>
struct
x
{
int i=0; /*line
A*/
};
void
main(int
argc)
{
struct x y; /*line
B*/
}
a) error due
to B,
b) no
problem with option A and
B,
c) error
somewhere other than line A and
B,
d) error
due to line A
ANS:d
21.
#include<stdio.h>
void main(int arg
c)
{
int
x=1111;
printf("%d",!x);
}
a.prints
1111
b.compilation
error
c.prints
0
d.is not a valid
option
ans:c
22.
struct
{
int
len;
char
*str
}*p;
++p ->
len
a.increments
p
b. increments
len
c.compilation
error
d.nothing happens with either of p and
len
ans:b
23.
int
i=10;
a.declaration
b.definition
c.both
d.none
ans:c
24.
#include<stdio.h>
void main(int arg
c)
{
char
a[]=abcdefghijklmnopqrstuvwxyz;
printf(%d,sizeof(a));
}
a.25
b.26
c.27
d.28
ans:c
25.
#include<stdio.h>
void main(int arg
c)
{
char
a[]=abcdefghijklmnopqrstuvwxyz;
char
*p=a;
printf(%d,strlen(p));
p+=10;
printf(%d,strlen(a));
}
a.26
26
b.26
16
c.compilation
error
d.16
26
ans:a
26 .If a file
contains the IT solutions Inc.rn then on reading this line the array str
using fgets() what would str
contain?
a. IT
solutions Inc.
b. IT
solutions Inc.r0
c.
IT solutions Inc.rn0
d. IT solutions Inc.n0
27. if the
following program (myprog)is run from the command line as myprog 1 2 3
what would be the
output?
Main(int argc , char
*argv[])
{
int I
,j=0;
for
(I=0;I<argc;I++)
j=j+atoi(argv[i]);
printf(%d.j);
}
a.
123 b.6
c.error
d.123
ans:6
28. when
pointers declared initialized to :
a.
null
b.newly allocated
memory
c)nothing,its
random
d)none of the
above
ans:c
29.
what is the output of the following
code?
#include<stdio.h>
oid
main()
{
printf("%d",printf(" hello world
"));
}
a) 13, b) hello world 13, c) hello world, d)
error
ANS:b
30. what is the
output of the following code, assuming that the array begins at location
5364875?
#include<stdio.h>
void main()
{
int
a[2][3][4]={
{2,1,4,3,6,5,8,7,0,9,2,2}
{1,2,3,4,5,6,7,8,9,0,1,2}
};
printf("%u %u %u
%u",a,*a,**a,***a);
}
a)
5364875,5364876,5364877,5364878
b)
5364875,5364876,5364877,2
c)
5364875,5364875,5364876,5364876
d)
5364875,5364875,5364875,2
ANS:d
31. Are null
statements in c null pointers.
32. Is cinst int *p same as int const*
p
|
