从小到大，记忆方式，先记住int
类型 十进制 八进制 十六进制
char %hhd %hho %hhx
unsigned char %hhu %hho %hhx
short %hd %ho %hx
unsigned short %hu %ho %hx
int %d %o %x
unsigned int %u %o %x
long %ld %lo %lx
unsigned long %lu %lo %lx
long long %lld %llo %llx
unsigned long long %llu %llo %llx
网易云课堂_艾叔：零基础一站式C语言|C程序设计精讲_章节8:输入与输出_课时51printf使用小结
原文：http://www.cnblogs.com/denggelin/p/6159516.html