数据库——添加

#include <stdio.h>
#include <sqlite3.h>

int main()
{
	sqlite3 *db; //声明sqlite关键结构指针	
	
	int ret = sqlite3_open("student.db", &db);
	
	if( ret != SQLITE_OK )
	{
		printf ("数据库打开失败\n");
		
		return -1;
	}
	
	char *errmsg;
	
	const char *sq1 = "create table if not exists student(ID INTEGER, name TEXT, sex TEXT, age INTEGER, primary key(ID))";
	// int sqlite3_exec(sqlite3*, const char *sql, sqlite3_callback, void *,  char **errmsg );
	ret = sqlite3_exec(db, sq1, NULL, NULL, &errmsg);
	
	if( ret != SQLITE_OK )
	{
		printf ("exec1失败：%s\n", errmsg);
		sqlite3_free(errmsg);
		
		return -1;
	}
	
	int id = 1;
	char name[20] = "liu";
	char sex[10] = "M";
	int age = 99;
	
	char str[100];
	
	sprintf (str, "insert into student values(NULL, '%s', '%s', %d)", name, sex, age);
	
	ret = sqlite3_exec(db, str, NULL, NULL, &errmsg);
	
	if( ret != SQLITE_OK )
	{
		printf ("exec2失败：%s\n", errmsg);
		sqlite3_free(errmsg);
		
		return -1;
	}
	
	sqlite3_close(db);
	
	return 0;
}