Q 1 - Linker generates ______ file.

A - Object code
B - Executable code
C - Assembly code
D - None of the above.

Q 2 - Compiler generates ______ file.

A - Executable code
B - Object code
C - Assembly code
D - None of the above.

Q 3 - Special symbol permitted within the identifier name.

A - $
B - @
C - _
D - .

Q 4 - A single line comment in C language source code can begin with ______.

A - ;
B - :
C - /*
D - //

Q 5 - A macro can execute faster than a function.

A - true
B - false

Q 6 - Choose the invalid identifier from the below

A - Int
B - volatile
C - DOUBLE
D - __0__

Q 7 - Choose the application option for the following program?

#include<stdio.h>
main()
{
   int *p, **q;
   printf("%u\n", sizeof(p));
   printf("%u\n", sizeof(q));
}

A - Both the printf() will print the same value
B - First printf() prints the value less than the second.
C - Second printf() prints the value less than the first.
D - Error in the code.

Q 8 - What is the built-in library function to adjust the allocated dynamic memory size.

A - malloc
B - calloc
C - realloc
D - resize

Q 9 - Identify the C compiler of UNIX.

A - gcc
B - cc
C - Borland
D - vc++

Q 10 - Following is the invalid inclusion of a file to the current program. Identify it.

A - #include <file>
B - #include “file”
C - #include < file
D - All of the above is invalid.

Q 11 - What is the output of the following program?

#include<stdio.h>
int* f() 
{
   int x = 5;
   return &x;
}
main() 
{
   printf("%d", *f());
}

A - 5
B - Address of ‘x’
C - Compile error
D - Runtime error

Q 12 - What is the output of the following program?

#include<stdio.h>
main() 
{
   char *p = NULL;
   printf("%c", *p);
}

A - NULL
B - 0
C - Compile error
D - Runtime error.

Q 13 - The default executable generation on UNIX for a C program is ______.

A - a.exe
B - a
C - a.out
D - out.a

Q 14 - What is the output of the following program?

#include<stdio.h>
void f() 
{
   static int i = 3;
   printf("%d ", i);
   if(--i) f();
}
main() 
{
   f();
}

A - 3 2 1 0
B - 3 2 1
C - 3 3 3
D - Compile error

Q 15 - What is the output of the following program?

#include<stdio.h>
main() 
{
}

A - No output
B - Garbage
C - Compile error
D - Runtime error

Q 16 - Choose the correct option with respect to the following program.

#include<stdio.h>
void f(int const i) 
{
   i=5;
}
main() 
{
   int x = 10;
   f(x);
}

I - Error in the statement ‘void f(int const i)’
II - Error in the statement i=5.

A - Statements I & II are true
B - Statements I & II are false.
C - Statement I is true
D - Statement II is true.

Q 17 - To store a word/sentence declare a variable of the type ‘string’.

A - true
B - false

Q 18 - What is the output of the following program?

#include<stdio.h>
int x = 5;
int* f() 
{
   return &x;
}
main()
{
   *f() = 10;
   printf("%d", x);
}

A - Compile error
B - Runtime error
C - 5
D - 10

Q 19 - What is the output of the below code snippet.

#include<stdio.h>
main()
{
   printf("%d", -11%2);
}

A - 1
B - -1
C - 5.5
D - -5.5

Q 20 - An exception is ______.

A - Runtime error
B - Compile-time error
C - Logical error
D - None of the above

Q 21 - Do both the loops in the following programs print the correct string length?

#include<stdio.h>
main()
{
   int i;
   char s[] = "hello";
   for(i=0; s[i]; ++i);
      printf("%d ", i);
   i=0; 
   while(s[i++]);
      printf("%d ", i);
}

A - Yes, both the loops prints the correct length
B - Only for loop prints the correct length
C - Only while loop prints the correct length
D - Compile error in the program.

Q 22 - For the below definition what is the data type of ‘PI’

#define PI 3.141

A - It's float
B - It's double
C - There is no type associated with PI, as it’s just a text substitution
D - Syntax error, the semicolon is missing with the definition of PI

Q 23 - Choose the invalid predefined macro as per ANSI C.

A - __FILE__
B - __DATE__
C - __TIME__
D - __C++__

Q 24 - What is the output of the following program?

#include<stdio.h>
main()
{
   int a[] = {10, 20, 30};
   printf("%d", *a+1);
}

A - 10
B - 20
C - 11
D - 21

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Q 25 - What is the output of the following program?

#include<stdio.h>
void f(int a[])
{  
   int i;
   for(i=0; i<3; i++)
      a[i]++;
}
main()
{
   int i,a[] = {10, 20, 30};
   f(a);
   for(i=0; i<3; ++i)
   {
      printf("%d ",a[i]);
   }
}

A - 10 20 30
B - 11 21 31
C - Compile error
D - Runtime error

Q 26 - What is the output of the following program?

#include<stdio.h>
main()
{
   char *s = "Hello, "
   "World!";
   printf("%s", s);
}

A - Hello, World!
B - Hello,World!
C - Hello
D - Compile error

Q 27 - What is the output of the following program?

#include<stdio.h>
main()
{
   fprintf(stdout,"Hello, World!");
}

A - Hello, World!
B - No output
C - Compile error
D - Runtime error

Q 28 - What is the output of the following program?

#include<stdio.h>
main()
{
   fprintf(stdout,"Hello, World!");
}

A - Hello, World!
B - No output
C - Compile error
D - Runtime error

Q 29 - Which of the following is used in the mode string to open the file in binary mode?

A - a
B - b
C - B
D - bin

Q 30 - What is the output of the following program?

#include<stdio.h>
main()
{
   char s[] = "Fine";
   *s = 'N';
   printf("%s", s);
}

A - Fine
B - Nine
C - Compile error
D - Runtime error

Q 31 - What is the output of the following program?

#include<stdio.h>
main()
{
   char *s = "Fine";
   *s = 'N';
   printf("%s", s);
}

A - Fine
B - Nine
C - Compile error
D - Runtime error

Q 32 - What is the output of the following program?

#include<stdio.h>
main()
{ 
   int x;
   float y;
   y = x = 7.5;
   printf("x=%d y=%f", x, y);
}

A - 7 7.000000
B - 7 7.500000
C - 5 7.500000
D - 5 5.000000

Q 33 - What is the built-in library function to compare two strings?

A - string_cmp()
B - strcmp()
C - equals()
D - str_compare()

Q 34 - What is the output of the following program?

#include<stdio.h>
main()
{ 
   char s1[50], s2[50] = "Hello";
   s1 = s2;
   printf("%s", s1);
}

A - Hello
B - No output
C - Compile error
D - Runtime error

Q 35 - What is the output of the following program?

#include<stdio.h>
int main();
void main()
{
   printf("Okay"); 
}

A - Okay
B - No output
C - Compile error. We cannot declare main() function.
D - Compile error. Mismatch in declaration & definition.

Q 36 - What is the output of the following program?

#include<stdio.h>
void main()
{
   char *s = "C++";
   printf("%s ", s);
   s++;
   printf("%s", s);
}

A - C++ C++
B - C++ ++
C - ++ ++
D - Compile error

Q 37 - What is the output of the following program?

#include<stdio.h>
void main()
{
   char s[] = "C++";
   printf("%s ",s);
   s++;
   printf("%s",s);
}

A - C++ C++
B - C++ ++
C - ++ ++
D - Compile error

Q 38 - A local variable is stored in ______.

A - Code segment
B - Stack segment
C - Heap segment
D - None of the above

Q 39 - What is the output of the following statement?

#include<stdio.h>
main()
{
   printf("%d", -1<<1 );  
}

A - 2
B - -2
C - 1
D - -1

Q 40 - What is the output of the following program?

#include<stdio.h>
main()
{ 
   int x = 3;
   x += 2;
   x =+ 2;
   printf("%d", x); 
}

A - 2
B - 5
C - 7
D - Compile error

Q 41 - What is the output of the following program?

#include<stdio.h>
main()
{ 
   char *s = "Abc";
   while(*s)
      printf("%c", *s++);
}

A - Abc
B - bc
C - Compile error
D - Runtime error

Q 42 - What is the output of the following program?

#include<stdio.h>
main()
{ 
   char s[20] = "Hello\0Hi";
   printf("%d %d", strlen(s), sizeof(s));
}

A - 5 9
B - 7 20
C - 5 20
D - 8 20

Q 43 - What is the output of the following program?

#include<stdio.h>
main()
{ 
   char s[] = "Hello\0Hi";
   printf("%d %d", strlen(s), sizeof(s));
}

A - 5 9
B - 7 20
C - 5 20
D - 8 20

Q 44 - What is the output of the following statement?

#include<stdio.h>
main()
{ 
   printf("%d", !0<2);
}

A - 0
B - 1
C - False
D - True

Q 45 - What is the output of the following program?

#include<stdio.h>
main()
{ 
   struct student
   { 
       int num = 10;
   }var;
   printf("%d", var.num);
}

A - 10
B - Garbage
C - Runtime error
D - Compile error

Q 46 - What is the output of the following program?

#include<stdio.h>
#define sqr(i) i*i
main()
{
   printf("%d %d", sqr(3), sqr(3+1)); 
}

A - 9 16
B - 9 7
C - Error: macro cannot be defined in lower case.
D - None of the above.

Q 47 - What is the output of the following program?

#include<stdio.h>
main()
{
   char *s = "Hello";
   while(*s!=NULL)
   printf("%c", *s++);
}

A - Hello
B - Helloellolloloo
C - ello
D - Compile error

Q 48 - What is the output of the following program?

#include<stdio.h>
main()
{  
   #undef NULL
   char *s = "Hello";
   while(*s != NULL)
   {
      printf("%c", *s++);
   }
}

A - Hello
B - Compile error: there is no macro called “undef”
C - Compile error: an improper place of #undef
D - Compile error: NULL is undeclared.

Q 49 - C is the successor of ______ programming language.

A - C++
B - B++
C - B
D - Mini C

Q 50 - Which of the following functions disconnects the stream from the file pointer.

A - fremove()
B - fclose()
C - remove()
D - file pointer to be set to NULL

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