Answer : B

Explanation

In the C Programming Language, the fmod() function compute and returns the floating-point remainder when x is divided by y.

#include <math.h>
#include <stdio.h>

int main( void )
{
   double x = -10.0, y = 3.0, z;

   z = fmod( x, y );
   printf( "The remainder of %.2f / %.2f is %f\n", w, x, z );
}

Answer : A

Explanation

ceil( ) function in C returns nearest integer value which is greater than or equal to the argument passed to thefunction.

#include <math.h>
#include <stdio.h>

 int main()
{
   float x=5.77;
   printf("ceil of  %f is  %f\n", x, ceil(x));
   return 0;
}

Answer : B

Explanation

Prototype of a function can be used to declare a function. It is necessary in order to provide information (return type, parameter list and function name, etc) about the function to the compiler.

Answer : A

Explanation

The function definition can even appear in another source code and can be linked from library while linking.

Answer : B

Explanation

• External Linkage-> A global, non-static variables and functions.
• Internal Linkage-> A static variables and functions with file scope.
• None Linkage-> A Local variables.

Answer : D

Explanation

Characters which are allowed and not allowed with variable name,

• Underscore(_) allowed
• Capital Letters ( A – Z ) allowed
• Small Letters ( a – z ) allowed
• Digits ( 0 – 9 ) allowed
• First Character should be alphabet or Underscore
• Blanks & Commas not allowed
• Special Symbols not allowed, but Underscore(_)allowed
• Reserved Word not allowed

Answer : B

Explanation

The double constant 3.14 can be converted into long double by adding “L” after the constant value, i.e; 3.14L.

Answer : B

Explanation

Depends upon the machine whether its big endian or small endian machine. Byte by byte is fetched from right end.

#include<stdio.h>
#include<math.h>

int main ()
{
   float a = 5.375;
   char *p;
   int i;
   
   p = (char*)&a;
   for(i=0; i <= 3; i++)
      printf("%02x\n", (unsigned char)p[i]);
   return 0;
}

Answer : B

Explanation

In C programming, math.h is a header file in the standard library designed for basic mathematical operations.

   Output of above code: The square root of 1234321.00 is 1111.00

#include<stdio.h>
#include<math.h>

int main ()
{
   double x = 1234321;
  
   double result = sqrt(x);
  
   printf("The square root of %.2lf is %.2lf\n", x, result);
   return 0;
}

Answer : A

Explanation

math.h is a header file in the standard library designed for basic mathematical operations

Answer : A

Explanation

#include <math.h>
#include <stdio.h>

 int main()
{
   float x = 3.6;	
   
   int y = (int)(x + 0.5);
   
   printf ("Result = %d\n", y );
   return 0; 

}

Answer : A

Explanation

#include <stdio.h>

 int main()
{
   long int decimalNumber,remainder,quotient;
    int binaryNumber[100], i = 1, j;

    printf("Enter any decimal number: ");
    scanf("%ld",&decimalNumber);
    quotient = decimalNumber;
    while(quotient!=0){
           binaryNumber[i++]= quotient % 2;
    quotient = quotient / 2;
    }
    printf("Equivalent binary value of decimal number %d: ",decimalNumber);
    for(j = i -1 ;j> 0;j--)
    printf("%d",binaryNumber[j]);
    return 0;
}

Answer : C

Explanation

A floating-point constant without an f, F, l, or L suffix has type double. If the letter f or F is the suffix, the constant has type float. If suffixed by the letter l or L, it has type long double.

Answer : C

Explanation

A floating-point constant without an f, F, l, or L suffix has type double. If the letter f or F is the suffix, the constant has type float. If suffixed by the letter l or L, it has type long double.

Answer : A

Explanation

Explanation: The function body shall associate a specific task, hence representing the action.

Answer : C

Explanation

There are three types of floating point data type = 1) float with storage size 4 byte, 2) double with storage size 8 byte, and 3) long double with storage size 10 byte.

Answer : B

Explanation

Explanation: The integral and precession value varies depending upon the number of bytes designated for a particular data type.

Answer : A

Explanation

In C programming, NULL indicates the value 0 of a pointer, which means; pointer that initializes with NULL value considered as NULL pointer.

Answer : A

Explanation

void rewind(FILE *stream): In C, the rewind function reposition the file position to the beginning of the file of the given stream. It also erases the error and end-of-file indicators for stream.

Answer : B

Explanation

In DOS, numbers of byte exist for near pointer = 2, far pointer = 4 and huge pointer = 4.

In Windows and Linux, numbers of byte exist for near pointer = 4, far pointer = 4 and huge pointer = 4.

Answer : C

Explanation

For a structure, Dot(.) operator can be used to access the data using normal structure variable and arrow (->)can be used to access the data using pointer variable.

Answer : B

Explanation

If, the array element is a[i][j] = *(*(a+i)+j)

If, the array element is a[i][j][k]= *(*(*(a+i)+j)+k)

Answer : C

Explanation

If var is a variable then &var is an address in memory.

Answer : A

Explanation

Pointer operator,

* (Value Operator) = Gives Value stored at Particular address

& (Address Operator) = Gives Address of Variable

Answer : A

Explanation

void *malloc(size_t size) : Allocates the requested memory and returns a pointer to it.

void *calloc(size_t nitems, size_t size): Allocates the requested memory and returns a pointer to it.

Answer : C

Explanation

calloc(): Allocates space for an array elements, initializes to zero and then returns a pointer to memory.

Free(): Dellocate the space allocated by calloc()

Answer : B

Explanation

free() is the function in C language to release the allocated memory by any dynamic memory allocating built in library function.

#include<stdio.h>
#include<stdlib.h>

#define MAXROW 4
# define MAXCOL 5

int main ()
{
   int **p, i, j
   
   p = (int **) malloc(MAXROW * sizeof(int*));
   return 0;
}

Answer : A

Explanation

The bitwise AND operator “&” compares each bit of the first operand with the corresponding bit of the second operand. During comparison, if both operands bits are 1, the corresponding result bit is set to 1. Otherwise, the corresponding result bit is set to 0.

Answer : C

Explanation

The stdio.h header is used to define variable types, macros, and various functions for performing input and output operation.

Answer : C

Explanation

malloc():Allocates an area of memory that is large enough to hold "n” number of bytes and initializes contents of memory to zeroes.

calloc(): Allocates "size" of bytes of memory and contains garbage values.

Answer : B

Explanation

The strrchr() function finds string for the last occurrence of a character and place the pointer to the last occurrence of character.

Answer : C

Explanation

If while(j <= 300),then whatever the size short int value, the while loop condition will execute until j value becomes 300.

#include<stdio.h>

int main ()
{
   int j = 1;
   
   while(j <= 300)
   {
      printf("%c %d\n", j, j);
      j++;
   }
   return 0;
}

Answer : B

Explanation

A structure, union and enumeration all of them can define a new data type.

Answer : B

Explanation

Hexadecimal is also known as hex or base 16. It is a system help in writing and presenting numerical values. Binary (base 2) is a popular numeral system (represent numbers by just two digit values “0 and 1”), used to present the language of computers. Hexadecimal system can easily convert those numbers.

Answer : D

Explanation

&& = Called Logical AND operator. If both the operands are non-zero, then condition becomes true.

|| = Called Logical OR Operator. If any of the two operands is non-zero, then condition becomes true.

! = Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then

Logical NOT operator will make false.

Answer : C

Explanation

&& = Called Logical AND operator. If both the operands are non-zero, then condition becomes true.

|| = Called Logical OR Operator. If any of the two operands is non-zero, then condition becomes true.

! = Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then

Logical NOT operator will make false.

Answer : B

Explanation

It is BODMAS.

Answer : B

Explanation

Standard error stream (Stderr) = Any program use it for error messages and diagnostics issue.

Answer : A

Explanation

Logical NOT operator will make false.

Answer : A

Explanation

In C, ltoa() function converts long/integer data type to string data type.

char *ltoa(long N, char *str, int base);

Answer : B

Explanation

The library function free() deallocates the memory allocated by calloc(), malloc(), or realloc().

Answer : B

Explanation

Two immediate ampersand (&) symbols is logical AND operator.

Answer : B

Explanation

ultoa() - Convert an unsigned long integer into a string.

Answer : A

Explanation

In C programming, the fflush() function writes any unwritten data in stream's buffer. If, stream is a null pointer, fflush() function will flush all streams with unwritten data in the buffer.

int fflush(FILE *stream);

Answer : A

Explanation

randomize() picks the current time value as the SEED number to generate random numbers.

Answer : C

Explanation

Following for loop there is only one statement, that is int i; break & continue are appearing out side for block which is compile error

#include<stdio.h>

int main ()
{
   int x;
   
   for(x=-1; x<=20; x++)int i;
   {
   if(x < 10)
      continue;
   else
      break;
   printf("India");
}

Answer : C

Explanation

Switch Case only accepts integer values for case label, float values can’t be accepted in case of Switch Case.

#include<stdio.h>

int main ()
{
   i = 1.8
   
   switch ( i )
   {
      case 1.6:
               printf ("Case 1.6");
               break;
      case 1.7:
               printf ("Case 1.7");
               break;
      case 1.8:
               printf ("Case 1.8");
               break;
       default :
               printf ("Default Case ");
   }

}

Answer : A

Explanation

In C, the return function stops the execution of a function and returns control with value to the calling function. Execution begins in the calling function by instantly following the call.

Answer : D

Explanation

A stack over flow comes when over loaded memory is used by the call stack. Here, main()function  is called repeatedly and its return address stores in the stack. When stack memory get filled, it displays the error “stack overflow”.

#include<stdio.h>

int main ()
{
   printf("IndiaPIN");
   main();
   return 0;

}

Answer : B

Explanation

Explanation: with or without the brackets surrounding the *p, still the declaration says it’s an array of pointer to integers.