Character in C Language

 

Character in C Language

Character:= C provides some built-in functions to perform operations on a character.  To use the character function in a program the header file <ctype.h> must be included in the program.

 

Character Input Output:=

 

1) scanf("%c",char_Identifier);

2) getcharactor(char_Identifier);

 

1) printf("%c",char_identifier[i]);

2) putcharactor(char_Identifier);

 

Character functions:= Character functions accept a character variable or a character contact as an argument.

 

charfunc(character_variable);

charfunc('character_variable’);

 

1) toupper()

2) tolower()

3) isalpha()

4) isdigit()

 

Write a program to find the given character is upper or lower case?

#include<stdio.h>

#include<ctype.h>

main()

{

            char letters;

            letters=getchar();

            if(islower(letters))

                        putchar(toupper(letters));

            else

                        putchar(tolower(letters));

}