#include<reg51.h>

#include<stdio.h>

void main()                             
{
    printf("char是多少个字节？%bd字节\n",sizeof(char));

    printf("long是多少个字节？%bd字节\n ",sizeof(long));
}
EXAMPLE.C(10): 错误 C100: unprintable character 0xD7 skipped
EXAMPLE.C(10): 错误 C100: unprintable character 0xD6 skipped
EXAMPLE.C(10): 错误 C100: unprintable character 0xBD skipped
EXAMPLE.C(10): 错误 C100: unprintable character 0xDA skipped
EXAMPLE.C(10): 错误 C100: unprintable character 0xA3 skipped
EXAMPLE.C(10): 错误 C100: unprintable character 0xBF skipped
EXAMPLE.C(10): 错误 C100: unprintable character 0xCA skipped
EXAMPLE.C(10): 错误 C100: unprintable character 0xC7 skipped
example.c - 8 个错误, 0 个警告。
这是为什么？

去c区问一下

估计有全角字符

51单片机支持中文么

文件名#include<stdio.h>是在vc++6.0这个软件用的，这是写c程序的
#include<reg52.h>是在keil软件用的，这是些单片机编程的，
你把#include<reg52.h>删了，在VC++6.0这个软件上编译一下试试