C语言里int,unsigned int,shor int...转换输出问题

这问题，有时候是个困扰，抽空梳理一遍。

char->unsigned char,%d->%d,10->10,-10->(256+10)

char->int:%c->%d,\'A\'->65(可打印字符表对应)

short int->unsigned short int:%d->%d,12345->12345，,-12345->53191（超出下限范围,+65535）

short int->unsinged int:%u->%d,12345->12345，-12345->4294954951（超出下限范围,+4294967295）

int->unsigned->int:%d->%u,12345->12345,-12345->4294954951

 

 

signed -128~127

unsigned char 0~127

char -128~127 (一般机器=signed char）

short int -32768~32767

unsigned short int 0~65535

int (signed int) -2147483648~2147483647

unsigned int 0~4294967295