C Programming | Managing I/O Operations

Qus. 01: In C language, define input & output operations and management of them.

Ans. : Input & output operations : The operations which took place in order to take data and make the display of the processed information are known as input & output operations.

           

            Management of input & output operations : In C language, in general, user use scanf and printf functions for input and output purpose respectively. The proper uses of these functions are termed management of input & output operation. There are also many functions which are used in C programming.

Qus. 02: Write down the character tests functions and their tests.

Ans. : In the following table the required functions and their tests are given.

         

Function	Test
isalnum(c)	Is c an alphanumeric character?
isalpha(c)	Is c an alphabetic character?
isdigit(c)	Is c a digit?
islower(c)	Is c a lower case letter?
isprint(c)	Is c a printable character?
ispunct(c)	Is c a punctuation mark?
isspace(c)	Is c a white space character?
isupper(c)	Is c an upper case later?

Qus. 03: Write down the commonly used scanf format codes ?

Ans. : In the following table the required format codes and their meanings are given.

Code	Meanings
%c	read a single character
%d	read a decimal integer
%e	read a floating point value
%f	read a floating point value
%g	read a floating point value
%h	read a short integer
%i	read decimal, hexadecimal or octal integer
%o	read an octal integer
%s	read a string
%u	read an unsigned decimal integer
%x	read a hexadecimal integer
%[....]	read a string of word(s)

ক্রেডিট : তন্ময় চক্রবর্তী

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