tst_toupper.c

来自「这是《Keil Cx51 V7.0单片机高级语言编程与uVision2应用实践》」· C语言 代码 · 共 9 行

#include <ctype.h>
#include <stdio.h>                 /* for printf */
void tst_toupper (void) {
  unsigned char i;
    for (i = 0x20; i < 0x7F; i++) {
      printf ("toupper(%c) = %c\n", i, toupper(i));
    }
}