* %d int * %f float\double * %ld long * %lld long long * %c char * %s 字符串 * %zd unsigned long * * 清空指针: * int a = 10; * int *p = &a; * //1、 * // p = 0; * //2、注意不是null * //p = NULL; * 清空指针后指针将不能再访问指向的区域 * ***/inta =10...