/* Char: Converting uppercase to lowercase */
#include <stdio.h>
void main()
{
char letter = 0; /* Stores a character */
printf("Enter an uppercase letter:");
scanf("%c", &letter); /* Read a character */
/* Check whether the input is uppercase*/
if(letter >= 'A') /* Is is A or greater? */
if (letter <= 'Z') /* and is it Z or lower? */
{ /* It is upper case */
letter = letter - 'A'+ 'a'; /* Convert from upper to lower case */
printf("An uppercase %c\n", letter);
}
else /* It is not an upper case letter */
printf("A capital letter please.\n");
}
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