Information Technology Online Test

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Information Technology

Description: Computer
Number of Questions: 15
Created by: Vijay Puri
Tags: IT Data Types Variables and Storage Classes Operators and Expression Conditional Statement Arrays and Pointers Java/Oracle /C/C++ Functions Standard C Preprocessor

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Which is the actual syntax to find the ratio of boys and girls in C language? (given that float ratio; int boys, girls;)

ratio = boys/girls;
ratio = girls/boys;
ratio = (float) girls/boys;
ratio = (float) boys/girls;
ratio = float boys/girls;

Find the output of the following code in C language assuming other parameters are correct. void main( ) { int a; int b; scanf ("%2d %5d", &a, &b); printf ("a = %d and b=%d.",a,b); }
/* input by the user is a=12345 and b = 67 during program execution*/

a=12345 and b=67
a=67 and b=12345
a=12 and b=345
a=12 and b=34567
a=12 and b=67

Which one of the following is example of compound assignment operator in C language?

a* = 5;
a=a+5;
a=a*5;
a<5;
a&&5

What will be output of the code if all other terms are assumed correct in C language? int age=17; (age>=18)? printf( I can vote.) : printf( I cannot vote.);

Incorrect code
Incorrect operator used
I can vote
I cannot vote
No output

'goto' statement is used in C programming to __________.

jump the control to specific location o screen
hold the control for user input
end the program execution
restart the execution from beginning
jump the control up or down at its label

What is the right coding to find the formatted output of float value upto 4 decimal points? float a=23.76548;

printf ( "% f ",a);
printf ( "% 4" , a );
printf ( "%2.4" f ;a);
printf ( "% i" ,a);
printf ( "%d" ;a);

Which of the following is not correct in context to array in C language?

It is a group of variables of similar datatype.
It stores the data in consucative memory location.
It is referred by a common name.
int val[5].
Array size can be changed during program execution.

Write the steps to interchange the variable values using least memory usages. Given that - int i, j;

swap(i,j);
i=j; j=i;
i = i + j ;j = i - j ;i = i - j ;
j = i - j;i = i + j ;i = i + j ;
int temp;temp=i;i = j;j = temp;

Which of the following statements is not correct about a function?

It is a set of instructions.
It performs a specific task.
It is reusable.
It is modular programming.
None of these

Find the output of the following code in C language, if assumed that all preprocessor directives are correct. void main ( ) { int a = 2, b = 2; if (a > 2)
if (b > 2)
printf ( "Hello"); Else
Printf ("Hi"); }

Hello
Hi
Error in execution
Normal program execution without any output
Program code error

If class name is Y, which is the right code to declare the copy constructor of the class?

Y(const Y & arg )
Y(Const *Y arg )
Y(Y arg)
Y(Y & arg)
None of these

A user defined header file myheader.h is saved at root directory. Write pre-processor directives to include the header file in the program code in C language.

include <myheader.h>
include <myheader.h>
include C:myheader.h
include "C:myheader.h"
main (C:myheader.h)

Which of the following is true?

define P printf
define P printf
use P printf
include

Which is correct statement about recursion?

It is a function which calls to itself.
It is a process in which a function calls to itself.
It runs for definite number of time without condition.
It is used to call global function.
It is used to call local function.

Given code is written in C language. Find the output of the program.

int i = 6, j = 14, k = 7, l = 7, x; x = i > j ? j > k ? 12 : k > l? 13 : 14 : 15;printf("%d", x);

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Information Technology

include <myheader.h>

include C:myheader.h

include "C:myheader.h"

define P printf

use P printf

include

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