C Language Technical Interview Questions And Answers

1.)

#define square(x) x*x

main()

{

int i;

i = 64/square(4);

printf("%d",i);

}

Answer:-

64

Explanation:

the macro call square(4) will substituted by 4*4 so the expression becomes i = 64/4*4 . Since / and * has equal priority the expression will be evaluated as (64/4)*4 i.e. 16*4 = 64

  

2.)

main()

{

char *p="hai friends",*p1;

p1=p;

while(*p!='\0') ++*p++;

printf("%s   %s",p,p1);

}

Answer:

ibj!gsjfoet

Explanation:

++*p++ will be parse in the given order

->> *p that is value at the location currently pointed by p will be taken

->> ++*p the retrieved value will be incremented 

->> when ; is encountered the location will be incremented that is p++ will be executed

Hence, in the while loop initial value pointed by p is ‘h’, which is changed to ‘i’ by executing ++*p and pointer moves to point, ‘a’ which is similarly changed to ‘b’ and so on. Similarly blank space is converted to ‘!’. Thus, we obtain value in p becomes “ibj!gsjfoet” and since p reaches ‘\0’ and p1 points to p thus p1doesnot print anything. 

3.)

#include

#define a 10

main()

{

#define a 50

printf("%d",a);

}

Answer:

50

Explanation:

The preprocessor directives can be redefined anywhere in the program. So the most recently assigned value will be taken.

4.)

#define clrscr() 100

main()

{

clrscr();

printf("%d\n",clrscr());

}

Answer:

100

Explanation:

Preprocessor executes as a seperate pass before the execution of the compiler. So textual replacement of clrscr() to 100 occurs.The input  program to compiler looks like this :

main()

{

    100;

    printf("%d\n",100);

}

Note:

100; is an executable statement but with no action. So it doesn't give any problem

5.)

main()

{

printf("%p",main);

}

Answer:

Some address will be printed.

Explanation:

  Function names are just addresses (just like array names are addresses).

main() is also a function. So the address of function main will be printed. %p in printf specifies that the argument is an address. They are printed as hexadecimal numbers.

ALL PLACEMENT TECHNICAL INTERVIEW C PROGRAMMING LANGUAGE QUESTION  BANCK  

1Technical /logical interview questions and solution in C language |2Technical / logical interview questions in C language |3C programming Language Technical Questions And Answers |4C Language Technical Questions And Answers |5C Language Technical Interview Questions And solution |6C Language Technical Interview Questions And Answers |7C Language Interview Questions And Solution |8online Placement Question of c programming languge |9online placement c programming question|10online test of c programming languge|11placement c programming quiz with solution |12c programming quiz with solution |13C programming languge quiz with solution |14C quiz with solution |15C languge quiz with solution  |16C programming quiz with solution |17questions with answer in C programming language|18Technical questions with solution in C programming language  |19Technical questions with answer in C programming language |20placement Question and answer in Simple C Language |21Simple C Language placement Question and answer22Simple C programming Question and answer |23Simple C programming Question and answer |24Simple C Language Question and answer |25c progrmming Interview question with solution  |26Technical placement question with solution in c progrmming |27placement c progrmming Question with Answer  |28c progrmming placement question with solution  |29 placement c progrmming languge question with Answer |30placement c progrmming languge question with solution  |31c progrmming languge placement question with solution  |32c languge placement question with solution |33placement c programming languge problem with solution  |34c programming languge placement problem with solution  |35c language placement problem with solution  |36Placement c languge problem with solution  |37c language problem with answer  |38c language problem with solution  |