将串中的小写字母转换为大写字母

[c]代码库

#include <stdio.h> 
#include <string.h> 

int main(void) 
{ 
   char *string = "abcdefghijklmnopqrstuvwxyz", *ptr; 

   /* converts string to upper case characters */ 
   ptr = strupr(string); 
   printf("%s\n", ptr); 
   return 0; 
}