Questions on C MCQ for TCS NQT

1.

#include <stdio.h>

           Int main()

{

                       int n,ch;

                      for(n=7;n!=0;n--)

                        {

                        printf(“n=%d”,n--)

                              ch=getchar();

                         }

                    Return 0;

}

2. Eesha works for ISRO where she is involved in a mission to intercept a comet that is likely to collide with in 1 month.she is developing a c program to calculate the trajectory of the missile to be launched to intercept and destroying the approaching comet.in order to achieve highest accuracy of the missile trajectory what data type should she use for the variables in her equation??

3. A program reads in 500 integers in the range [0…100]representing the scores of 500 students.it then prints the frequency of each score above 50.what would be the best way for the program to store the frequencies?

4. Which of the following is TRUE about binary trees?

5. Eesha wants to incorporate a history feature .When she presses “go back” then it will be able to be vist the previous page.what data type of data structure is used ?

6.

#include <stdio.h> 

long int fact (int n);

int main ()

{

int n;

printf (“Enter a positive integer: “); 

scanf (“%d”, &n);

printf(“factorial of %d = %ld “, n, fact (n)); 

return 0;

}

long int fact (int n)

{

if (n != 1)

return n*fact (n-1)

else

return 1;

}

7. Which are Incorrect options for array ?

8. Which of the following are not a core of OS ?

9. Which of the following statements is not true?