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Aptitude Test C Programming of TCS Fresher or Campus Interview
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1.
Which is not a string function?
strupr
strcmp
strstr
strchr
2.
Predict the Output :
float a = 0.1;
if(a==0.1)
printf(“Yes”);
else
printf(“No”)
No
Yes
3.
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.
An array can have elements of different data types.
Elements of a linked-list can be accessed only sequentially.
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.
4.
The difference between variable declaration and variable definition is
Declaration associates type to the variable whereas definition associates scope to the variable.
Declaration and definition are the same. There is no difference.
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
5.
Which of the following is NOT a valid storage class in C language?
Register
Auto
Dynamic
Extern
6.
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);
}
}
123451234123121
12345123412345121
112123123412345
123451234512345123451
7.
What is the task of pre-processor?
Linking
Expanding
Compiling
All Of Above
8.
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
List
Stack
Queue
9.
In c language, if a function return type is not explicitly defined then it defaults to what data type?
long int
char
float
int
10.
Which of this is used to skip one iteration:
return
break
goto
continue
11.
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:
d e b f g c a
e d b g f c a
e d b f g c a
d e f g b c a
12.
Comment on the below while statement
while(0 == 0)
{
}
It has syntax error as there are no statements within braces {}
It has syntax error as the same number is being compared with itself
It compare 0 with 0 and since they are equal it will exit the loop
It will run for ever
13.
Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1?
rem = modf(3.14, 2.1);
Remainder cannot be obtained in floating point division.
rem = 3.14 % 2.1;
rem = fmod(3.14, 2.1);
14.
Which of the following is true?
Unary operator works on only one operand
realloc() can change the memory size of arrays
Struct and Union works in same way
None of above
15.
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 500 numbers
A dynamically allocated array of 550 numbers
An array of 101 numbers
An array of 50 numbers
16.
Which address does a pointer to an array store:
Memory address of the first element of the array
Memory address of the second element of the array
Memory address of the third element of the array
Memory address of the fourth element of the array
17.
Which is the character array used to accept command line arguments?
char argv[]
char argv
char* argv
char* argv[]
18.
The full set of operations allowed on a stack are
Push,pop,add,remove,substitute
Push,pop,remove
Push,pop, add,remove
Push ,pop
19.
What is a dangling pointer?
Point to garbage Value
Points to nothing
Points to address
None of Above
20.
Which of the following does not require to include math.h header file?
rand()
sinh()
sqrt()
pow()
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