/*
* 將大寫字母轉換為小寫字母
*/
#include <stdio.h>
int lower(int c)
{
 return ((c>='A')&&(c<='z'))?(c+'a'-'A'):(c);
}
main()
{
 int i;
 char a[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 for(i=0;i<26;i++){
  printf("%c result is %d ------ %c\n",a[i],lower(a[i]),(char)lower(a[i]));
 }
}