toupper.c

来自「C语言经典程序的源码对初学者很有用,内容涉及面广」· C语言 代码 · 共 18 行

#include <stdio.h>
#include <ctype.h>

void main (void)
 {
   char string[] = "Jamsa's 1001 C & C++ Tips";

   int i;

   for (i = 0; string[i]; i++)
     putchar(toupper(string[i]));
   putchar('\n');

   for (i = 0; string[i]; i++)
     putchar(_toupper(string[i]));
   putchar('\n');
 }