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Aptitude Test C Programming of TCS Fresher or Campus Interview
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1.
Predict the Output :
float a = 0.1;
if(a==0.1)
printf(“Yes”);
else
printf(“No”)
Yes
No
2.
Which is not a string function?
strcmp
strchr
strstr
strupr
3.
The difference between variable declaration and variable definition is
Declaration and definition are the same. There is no difference.
Declaration associates type to the variable whereas definition associates scope to the variable.
A declaration is used for variables and definitions is used for functions.
Declaration associates type to the variable whereas definition gives the value to the variable
4.
Which of the following does not require to include math.h header file?
sqrt()
rand()
sinh()
pow()
5.
Which of this is used to skip one iteration:
continue
break
return
goto
6.
Which of the following is NOT a valid storage class in C language?
Dynamic
Extern
Register
Auto
7.
Neha is developing an IP telephony software in which the audio is encoded and transmitted by the sender as network packets through a communication channel. At the other end these packets are assembled and processed further.Neha recognizes that there maybe a very large number of packets this number is unknown and which will be processed while more packets are being received .assume that the packets arrive in right order .what data structure should Neha use?
Array
Queue
List
Stack
8.
Which address does a pointer to an array store:
Memory address of the first element of the array
Memory address of the third element of the array
Memory address of the second element of the array
Memory address of the fourth element of the array
9.
Which is the character array used to accept command line arguments?
char argv
char argv[]
char* argv
char* argv[]
10.
What is a dangling pointer?
Point to garbage Value
Points to nothing
None of Above
Points to address
11.
Which of the following is true?
Unary operator works on only one operand
Struct and Union works in same way
None of above
realloc() can change the memory size of arrays
12.
What is the task of pre-processor?
All Of Above
Expanding
Compiling
Linking
13.
The inorder and preorder traversal of a binary tree are d b e a f c g and a b d e c f g, respectively. The post-order traversal of the binary tree is:
e d b g f c a
e d b f g c a
d e b f g c a
d e f g b c a
14.
In c language, if a function return type is not explicitly defined then it defaults to what data type?
int
char
long int
float
15.
How many times the below loop will be executed?
#include
<stdio.h>
int main()
{
int x, y;
for(x=5; x>=1; x--)
{
for(y=1; y<=x; y++)
printf("%d\n",y);
}
}
112123123412345
123451234512345123451
123451234123121
12345123412345121
16.
Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1?
rem = fmod(3.14, 2.1);
rem = modf(3.14, 2.1);
Remainder cannot be obtained in floating point division.
rem = 3.14 % 2.1;
17.
Which of the following is true?
Array is a dynamic data structure whose size can be changed while stacks are static data structures whose sizes are fixed.
Array elements can be accessed and modified(elements can be added or removed) only at the ends of the array while any elements of the stack can be accessed or modified randomly through their indices.
An array can have elements of different data types.
Elements of a linked-list can be accessed only sequentially.
18.
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?
An array of 50 numbers
An array of 101 numbers
An array of 500 numbers
A dynamically allocated array of 550 numbers
19.
The full set of operations allowed on a stack are
Push,pop, add,remove
Push,pop,remove
Push,pop,add,remove,substitute
Push ,pop
20.
Comment on the below while statement
while(0 == 0)
{
}
It compare 0 with 0 and since they are equal it will exit the loop
It will run for ever
It has syntax error as the same number is being compared with itself
It has syntax error as there are no statements within braces {}
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