Programming in C structures and files

Which of the following are themselves a collection of different data types?

• Strings

• Structures

• Unions

• Both Structures & Unions

Union differs from structure in the following way

• All members are used at a time

• Only one member can be used at a time

• Union cannot have more members

• Union initialized all members as structure

Which operator connects the structure name to its member name?

• *

• .

• &

• +

The size of the following union, where an int occupies 4 bytes of memory is

union demo

{

float x;

int y;

char z[10];

};

• 8 bytes

• 4 bytes

• 10 bytes

• 18 bytes

Which of the following is a properly defined struct?

• struct {int a;}

• struct a_struct {int a;}

• struct a_struct int a;

• struct a_struct {int a;};

Which properly declares a variable of struct foo?

• struct foo;

• struct foo var;

• foo;

• int foo;

The first and second arguments of fopen() are

• A character string containing the name of the file & the second argument is the mode

• A character string containing the name of the user & the second argument is the mode

• A character string containing file pointer & the second argument is the mode

• None of the mentioned

 For binary files, a ___ must be appended to the mode.

• b

• a

• "binary"

• "01"

Select a function which is used to write a string to a file?

• pits()

• putc()

• fputs()

• fgets()

Offset used in fseek() function call can be a negative number.

• TRUE

• FALSE

• May Be

• Can't Say