Tata-ELXSI Technical-C Contributed by Not Specified updated on Jul 2019

 

The test consisted of 2 sections one technical section 30 questions, to be answered in 30 minutes it included questions mostly on C and some 5-6 questions. on OS The C portion was difficult and the average score was around 15-20 The questions were totally different...not from Test your C skills... there were quite a few mistakes in printing so assume them accordingly some people told that quite a few questions. matched with a book C under DOS test so if can get that book it's well and good else be confident with what u know:

nt a=9;
switch(i)
{
printf("hello");
case 9 : printf("abc");
break;
default : printf("def"); 
}
what would be the output ?
ans : the program will compile correctly with no errors but will give undesirable results

int z[3]={1,2,3};
int *p=&z[1];
int x=*p++;
printf("%d",x);
ans. note here that the value of *p will be assigned to x and then p is incremented therefore x=2

#define paste(a,b) a##b
main()
{
int a=3,b=6;
paste(a,b);
return o;
}
question. what code will be replaced at the call of the macro 
options : (a,b) a,b (a,b)
(ab) a,b (ab)
(a,b) ab (a,b)
ans. not able to work it out

some structure declaration was given
 struct abc
{
int a : 4
char c : 2
int abc;
}
ques. what will be memory allocated to it when we define an object of this structure

ans . the bits are added and rounded of 2 next higher byte 
eg. 5 bits - 1 byte
1 bit - 1 byte
9 bits - 2byte

some ques. on memory allocation so clear ur funda of memory allocation properly

To declare a boolean variale in C what method we follow ans. using bit feilds

What does painter's algo. is for in graphics ans. don't know 

Which is more efficient calling a function by its name or by using a pointer to the function

External functions and external variables are all global 

There are 5 jobs A B C D and E u have to schedule these jobs using the SPT , DD and STR ( i cant 
remember 

the fullforms) and job processing time was given constraints:
Spt = DD
STR = DD - SPT
ANS: using this table u can solve the eqs Freshersworld.com
spt E C A B D
DD E A C B D
STR E A/B D C
order of excution

c = prt/ropd prt = production/rate ropd = rotations Nt = T/c E = T/Na * c Na = whole number  
according this formula there WERE 5 qs

A B C D E are 5 boys and find the ages of them given 1) B-A = 5 
2) B>A 
3) D>F 
4) E-D<2
5) D-F > 2
6) All of the above are false

About the graphics similar to java function draearc drawrect, find the area, center by giving values to function    
drawarc.
1. about process ( os )
2. stacks (data struct..)
3. graphs ( binary trees)
4. time complexity of the c program they had given
5. c program ( recurrsion find the no. of print stat exec. in the recu. func. ans. 4) 

About the soft. engineering i.e identify the phases
1) collecting the information - requirement analysis phase testing or design .. ( similarly identify the 5 statemnets
they had given) 

Choose the correct expression                                                              
((())) correct 
()(()( incorrect.
  
    Technical Questions

about process ( os )

stacks (data struct..)

graphs ( binary trees)

time complexity of the c program they had given

c program ( recurrsion find the no. of print stat exec. in the recu. func. ans. 4)

about the soft. engineering i.e identify

 

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