Answer Posted / prit

The different storage types in C++ are
Auto: all the variables declared in C++ are of the type
auto by default
The scope is limited to the loop

int temp; //is by default of type auto

Register: tels the C++ compiler to allocate some storage in
the registers.They are supposed to be faster then other
storage types.

register int var;

Only nonstatic， local variables may reside in registers，
and C++ uses the same rules for register variable scope and
initialization as it does with automatic variables

Mutable:const memebre functions or data types can be
modified using mutable keyword.

mutable int i;

static:static variable is declared as a member of a class,
then it will preserve the value for all the objects of the
class.i.e, one copy of this data variable will be shared by
all objects of the class.

static int temp;

extern : extern keyword is used to specify that the
variable is declared in a different file.Used mostly to
declare global scope

extern int num;

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write a program that reads in a file and counts the number of lines, words, and characters. Your program should ask the user to input a filename. Open the file and report an error if the file does not exist or cannot be opened for some other reason. Then read in the contents of the file and count the number of lines, words, and characters in the file. Also print additional information about the file, such as the longest and shortest words, and longest and shortest lines. For simplicity, we define a word to be one or more characters ending with white space (a space, tab, carriage return, etc.). Functions for checking the types of characters can be found in the ctype.h header file, so you want to include this header file in your program. For example, the sentence below could be all that is in a file. This sentence IT 104 is taught in C++. has 32 characters, one line, and six words. The shortest line is 32 characters. The longest line is 32 characters. The shortest word is 2 characters. The longest word is 6 characters

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