Program to check given character is in upper case or lower case and convert into upper or lower case in C.

Code Box
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/* program to Check in put character is Lower or upper case and convert them into other case */

#include<stdio.h>
#include<conio.h>
void main()
{
int i;
char c;
clrscr();

printf("\nEnter a character :");
scanf("%c",&c);

i=c;

if(i>=97 && i<=122)
{
printf("\nEntered Character is Lower Case : %c",c);
i=i-32;
c=(char)i;  /*Explicit type conversion */
printf("\nUpper case  Character is: %c",c);

}
else if(i>=65 && i<=90)
{
printf("\nEntered Character is Upper Case : %c",c);
i=i+32;
c=(char)i;   /*Explicit type conversion */
printf("\nLower Case  Character is: %c",c);

}
else
{
printf("\nPlease enter a correct case Character");

}

getch();

}