Function MCQ

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• How is search done in #include and #include "somelibrary.h" according to C standard?
  ক

  When former is used, current directory is searched and when latter is used, standard directory is searched

  খ

  When former is used, standard directory is searched and when latter is used, current directory is searched

  গ

  When former is used, search is done in implementation defined manner and when latter is used, current directory is searched

  ঘ

  For both, search for 'somelibrary' is done in implementation-defined places
• Which of the following Macro substitution are accepted in C?
  ক

  #define A #define<br>A VAR 20

  খ

  #define A define<br>#A VAR 20

  গ

  #define #A #define<br>#A VAR 20

  ঘ

  None of the mentioned
• The preprocessor provides the ability for . . . . . . . .
  ক

  The inclusion of header files

  খ

  The inclusion of macro expansions

  গ

  Conditional compilation and line control

  ঘ

  All of the mentioned
• Comment on the output of the following C code.<br><pre><code class="c-program">#include &lt;stdio.h&gt;int main(){ int i; for (i = 0;i </code></pre>
  ক

  a is out of scope when printf is called

  খ

  Redeclaration of a in same scope throws error

  গ

  Syntax error in declaration of a

  ঘ

  No errors, program will show the output 5
• Which of the following sequences are unaccepted in C language?
  ক

  #if<br>#else<br>#endif

  খ

  #if<br>#elif<br>#endif

  গ

  #if<br>#if<br>#endif

  ঘ

  #if<br>#undef<br>#endif
• Which variable has the longest scope in the following C code?<br><pre><code class="c-program">#include &lt;stdio.h&gt;int b;int main(){ int c; return 0;}int a;</code></pre>
  ক

  a

  খ

  b

  গ

  c

  ঘ

  Both a and b
• Can variable i be accessed by functions in another source file?<br><pre><code class="c-program">#include &lt;stdio.h&gt;int i;int main(){ printf("%d\n", i);}</code></pre>
  ক

  Yes

  খ

  No

  গ

  Only if static keyword is used

  ঘ

  Depends on the type of the variable
• Functions in C are always . . . . . . . .
  ক

  Internal

  খ

  External

  গ

  Both Internal and External

  ঘ

  External and Internal are not valid terms for functions
• What is the problem in the following C declarations?<br><pre><code class="c-program">int func(int);double func(int);int func(float);</code></pre>
  ক

  A function with same name cannot have different signatures

  খ

  A function with same name cannot have different return types

  গ

  A function with same name cannot have different number of parameters

  ঘ

  All of the mentioned
• A local variable declaration with no storage class specified is by default . . . . . . . .
  ক

  auto

  খ

  extern

  গ

  static

  ঘ

  register
• #include statement must be written . . . . . . . .
  ক

  Before main()

  খ

  Before any scanf/printf

  গ

  After main()

  ঘ

  It can be written anywhere
• What will be the x in the following C code?<br><pre><code class="c-program">#include &lt;stdio.h&gt;void main(){ int x;}</code></pre>
  ক

  automatic variable

  খ

  static variable

  গ

  register variable

  ঘ

  global variable
• The value obtained in the function is given back to main by using . . . . . . . . keyword.
  ক

  return

  খ

  static

  গ

  new

  ঘ

  volatile
• Automatic variables are allocated space in the form of a . . . . . . . .
  ক

  stack

  খ

  queue

  গ

  priority queue

  ঘ

  random
• What is #include &lt;stdio.h&gt;?
  ক

  Preprocessor directive

  খ

  Inclusion directive

  গ

  File inclusion directive

  ঘ

  None of the mentioned
• Property of the external variable to be accessed by any source file is called by the C90 standard as . . . . . . . .
  ক

  external linkage

  খ

  external scope

  গ

  global scope

  ঘ

  global linkage
• Comment on the output of the following C code.<br><pre><code class="c-program">#include &lt;stdio.h&gt;#include "test.h"#include "test.h"int main(){ //some code}</code></pre>
  ক

  True

  খ

  Compile time error

  গ

  False

  ঘ

  Depends on the compiler
• Automatic variables are . . . . . . . .
  ক

  Declared within the scope of a block, usually a function

  খ

  Declared outside all functions

  গ

  Declared with the auto keyword

  ঘ

  Declared within the keyword extern
• Register variables reside in . . . . . . . .
  ক

  stack

  খ

  registers

  গ

  heap

  ঘ

  main memory
• Automatic variables are stored in . . . . . . . .
  ক

  stack

  খ

  data segment

  গ

  register

  ঘ

  heap
• The C-preprocessors are specified with . . . . . . . . symbol.
  ক

  #

  খ

  $

  গ

  " "

  ঘ

  &amp;
• The "else if" in conditional inclusion is written by?
  ক

  #else if

  খ

  #elseif

  গ

  #elsif

  ঘ

  #elif
• If the file name is enclosed in angle brackets, then . . . . . . . .
  ক

  The preprocessor treats it as a user-defined file

  খ

  The preprocessor treats it as a system-defined file

  গ

  The preprocessor treats it as a user-defined file &amp; system-defined file

  ঘ

  None of the mentioned
• Which of the following function declaration is illegal?
  ক

  [ <p><span>A. <pre><code class="c-program">double func();int main(){}double func(){}</code></pre> <p><span>B. <pre><code class="c-program">double func(){};int main(){}</code></pre>

  খ

  <pre><code class="c-program">int main(){ double func();}double func(){//statements}</code></pre>

  গ

  None of the mentioned
• #include &lt;somefile.h&gt; are . . . . . . . . files and #include "somefile.h" . . . . . . . . files.
  ক

  Library, Library

  খ

  Library, user-created header

  গ

  User-created header, library

  ঘ

  They can include all types of file
• Comment on the following 2 C programs.<br><pre><code class="c-program">#include &lt;stdio.h&gt; //Program 1int main(){ int a; int b; int c;}#include &lt;stdio.h&gt; //Program 2int main(){ int a; { int b; } { int c; }}</code></pre>
  ক

  Both are same

  খ

  Scope of c is till the end of the main function in Program 2

  গ

  In Program 1, variables a, b and c can be used anywhere in the main function whereas in Program 2, variables b and c can be used only inside their respective blocks

  ঘ

  None of the mentioned
• Which part of the program address space is p stored in the following C code?<br><pre><code class="c-program">#include &lt;stdio.h&gt;int *p;int main(){ int i = 0; p = &amp;i; return 0;}</code></pre>
  ক

  Code/text segment

  খ

  Data segment

  গ

  Bss segment

  ঘ

  Stack
• The below two lines are equivalent to . . . . . . . .<br><pre><code class="c-program">#define C_IO_HEADER &lt;stdio.h&gt;#include C_IO_HEADER</code></pre>
  ক

  #include&lt;stdlib.h&gt;

  খ

  #include"printf"

  গ

  #include"C_IO_HEADER"

  ঘ

  #include&lt;stdio.h&gt;
• What is the sequence for preprocessor to look for the file within ?
  ক

  The predefined location then the current directory

  খ

  The current directory then the predefined location

  গ

  The predefined location only

  ঘ

  The current directory location
• Which function definition will run correctly?
  ক

  int sum(int a, int b)<br>return (a + b);

  খ

  int sum(int a, int b)<br>{return (a + b);}

  গ

  int sum(a, b)<br> return (a + b);

  ঘ

  none of the mentioned