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4

The function fopen() on failure returns---------------------.

A. 0

B. NULL

C. 1

D. none of the above

Correct Answer :

B. NULL


Related Questions

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4

The output of the following code is:
void change (char *k) 
{
k="Hello";
return;
}
main()
{
char *ch = "World";;
change(ch);
printf("%s", ch);
}

A. Hello

B. World

C. Compilation error

D. Hello World

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4

Single operations involving entire arrays are permitted in C.

A. True

B. False

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4

do-while loop is useful when we want the statements within the loop must be executed

A. Only once

B. At least once

C. More than Once

D. Any one of the above

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4

p++ executes faster than p + 1.

A. True

B. False

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4

For 16bit compiler allowable range for integer constants is ______ ?

A. 3.4e38 to 3.4e38

B. 32767 to 32768

C. 32768 to 32767

D. 32668 to 32667

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4

Which of the following is an example of compounded assignment statement?

A. a = 5

B. a += 5

C. a = b = c

D. a = b

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4

What is C Tokens?

A. The smallest individual units of c program

B. The basic element recognized by the compiler

C. The largest individual units of program

D. A & B Both

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4

Identify the wrong statement

A. putchar(65)

B. putchar('x')

C. putchar("x")

D. putchar('
')

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4

The output of the following code is:
main() 
{
void msg()
{
printf("HELLO WORLD");
}
}

A. HELLO WORLD

B. Error

C. None of the above

D. Null

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4

Which classes allow primitive types to be accessed as objects?

A. Storage

B. Virtual

C. Friend

D. Wrapper

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4

fopen() function returns a pointer to the open file.

A. True

B. False

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4

The-------------------- statement helps immediate exit from any part of the loop

A. break

B. continue

C. exit

D. All of the above

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4

Which of the following is invalid?

A. ''

B. " "

C. 'a'

D. abc'

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4

The default initial value of automatic storage class is 0.

A. True

B. False

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4

Only one break can be used in one loop.

A. True

B. False

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4

Which of the following is not true about preprocessor directives

A. They begin with a hash symbol

B. They are processed by a preprocessor

C. They form an integral part of the code

D. They have to end with a semi colon

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4

static variable will not always have assigned value.

A. True

B. False

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4

void' is a datatype.

A. True

B. False

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4

Which of the following keyword supports dynamic method resolution?

A. abstract

B. Virtual

C. Dynamic

D. Typeid

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4

The output of the following code is:
main() 
{
xyz: goto abc;
printf("Hello");
abc: printf("World");
goto xyz;
}

A. Infinite loop

B. Hello World

C. World Hello

D. Compilation error

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4

The output of the following code is:
void main() 
{
int a = 0;
while (a<=50) for(;;) if(++a % 50==0) break;
printf("a = %d", a);
}

A. a = 100

B. a = 50

C. compilation error

D. runtime error

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4

The array 'char name[10] can consist of a maximum of 9 characters.

A. True

B. False

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4

enum helps to create user defined datatype.

A. True

B. False

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4

The identifier argv[] is a pointer to an array of strings.

A. True

B. False

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4

The output of the following code is:
void main() 
{
char a = 'B';
switch (a)
{
case 'A' : printf("a");
case 'B' : printf("b");
default : printf("c");
}

A. B

B. b

C. bca

D. bc

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4

unsigned' is a valid variable name.

A. True

B. False

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4

Which header file is essential for using strcmp() function?

A. string.h

B. strings.h

C. text.h

D. strcmp.h

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4

The value of an enumerated datatype can be read using scanf() function.

A. True

B. False

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4

Which of the following shows the correct hierarchy of arithmetic operations in C

A. / + *

B. * / +

C. + / *

D. * / + -

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4

Which of the following language is predecessor to C Programming Language?

A. A

B. B

C. BCPL

D. C++