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Subex Testing Paper
Technical Skills Test :
1. What will be the output of the following program?
Note: Space is represented by 0.
int main(int argc,char *argv[])
{
char *s=Hello,world;printf(%10s,s);
}
a) Hello,world0000000000
b) Hello,worl
c) 0000000000Hello,world
d) Hello,world
ans: d
2. In the below program the getNewString function is defined and it returns a character pointer. This function is called from main function as defined below. What will be the output of this program?
char *getNewString( )
{static char xxx[1024];return xxx;}
main( )
{
char g[]=First;char *p;strcpy(getNewString( ),g);
p=getNewString( );
strcpy(p,Second);
printf(The string is : %s,getNewString( ));
}
a) The string is : First
b) The string is : FirstSecond
c) The string is
d) Unknown, since the scope of the pointer is local
ans: c
3. What will be output of the following recursive program?
void printme(int *p)
{int q=*p;if(*p>0)
{q=*(p);printme(p);}printf(%d,q);}void main(void)
{int x[5]={0,16,12,8,1};
printme(&x[4]);}
a) 0,0,1,2,3,
b)4,8,12,16,0,
c) Error cannot pass elemenpointer
d) 0,16,12,8,4
4. What is the output of the following line in 32-bit OS?
printf(%d%d\n,sizeof(a),sizeof(a));
a) 4,2
b) 1,1
c) 1,2
d)2,2
5. What is the output of following program?
#include
#include
main( )
{char str[]=Welcome to Subex Systems;
char *ptr;
ptr=strtok(str, );
while(ptr) ptr=strtok(NULL, );
printf(%s\n,str);}
a) Welcome to Subex Systems
b) Error, since NULL is passed to strtok
c)NULL
d) Welcome
6. Study the program below and predict the output
#include
int compute(int (*)(int),int);
int cube(int);
main( )
{printf(%d\n,compute(cube,4));}
/* no syntax errors please
have fun!!*/
int compute(int(*f),int in)
{int res=0,i;for(i=1;i<=in;i++);res+=(*f)(i);return(res);}
int cube(int n)
{return (n*n*n);}
a) 150
b) 64
c) 125
d)225
7. The output of the following program is
#include
main( )
{
int i=-1;while(i<5)
{
#ifdef _X_printf(%d,i++);#endif
}
}
a) Compiler error
b) -1,0,1,2,3,4,
c) Infinite loop
d) 1,2,3,4,
8. The output of the following program is
#include
void f(char* p);
main( )
{
char *p=(char*)l;f(p);printf(%s\n,p);
}
void f(char *p)
{
char sz[]=hello;p=sz;
}
a) Runtime error
b) NULL
c)hello
d) Compiler error
9. The output of the following program is
#includestdio.h>
void f(char **p)
{
char *sz=hello;*p=sz;
}
main( )
{
char *p=NULL;f(&p);printf(%s\n,p);
}
a) Compiler error
b) Runtime error
c) hello
d) 1
10. The output of the following program is
#include
main( )
{
int n;if(n<=-1)
{
int x=1else
{
int x=1;
}a) Compiler error b) Unpredictable output c) 10 d) 1
11. The correct declaration of a pointer func to function returning a char and taking no parameters is
a) char func( )* func;
b) char (*func)( );
c) char* ( ) func;
d) None of the above
12. The output of the following program is
#include
#define arbit 5
main( )
{
printf(%d\n,arbit
}
a) 5
b) 6
c) Compiler error
d) Runtime error
13. Determine which of the following are valid identifiers
i. Return
ii.123 45 6789
iii. Record_1
iv. $Tax
a) iii & iv
b) i & iii
c) i,ii & iv
d) i & iv
14. The output of the following program is
#include
struct x {int a; char *b;}*p;
main( )
p=(struct x*) 100;
printf(%d,%d,%d\n,p,p+1,&p[2]);
a) 100,108,116
b) Compilation error
c) 100,104,108
d) 100,103,106
15. What is the output of the following?
main( )
int a[5]={5,1,15,20,25};
int i=1;
printf(\n%d%d,a++,a[++i]);
a) 2,16
b) 1,15
c) 1,20
d) 2,1
16. What is the output of the following
main( )
int a[5]={5,1,15,20,25};
int i=1;
printf(\n%d%d,a,a[i++i]);
a) 2,16
b) 1,15
c) 1,20
d) 2,16
16. static float table [2][3]={{1,1,1,2,1,3},{2,1,2,2,2,3}};What is the value of *(*(table)+1)+1?
a) 2,2
b)1,2
c) 2,1
d) 2,3
17. What is the output of the following program?
#include
main( )
int i,j,x=0;
for(i=0;i<5;++i)
for(j=0;j
x+=(i+j-1);
printf(%d,x);
break;
a) 1
b) 0
c) 2
d) None of the above
18. Consider the following
i. Pointer to a function that accepts 3 integer arguments and returns a floating-point quantity
float(8pf)(int a, int b,int c)
ii. Pointer to a function that accepts 3 pointers to integer quantities as arguments an returns a pointer to a floating-point quantity
float *(*pf)(int *a,int *b,int *c);
a) i is true, ii is true
b) i is true,ii is false
c) i is false, ii is false
d) i is false, ii is true
19. Consider the following statements
i. An integer quantity can be added to or subtracted from a pointer variables.
ii. Two pointer variables can be added.
iii. A pointer variable can be multiplied by a constant
iv. Two pointer variables of same type can be subtracted.
a) Only ii & iv are true
b) Only iii is false
c) Only ii is false
d) Only i & ii are true
20. If p is a pointer ,what does p mean?
a) Same as *(*p+i)
b) Same as *(p+i)
c) Same as *p+i
d) None of the above
