一、插入

#include <stdio.h>
#include <sqlite3.h>
void do_insert(sqlite3 *db);
int main(int argc, const char *argv[])
{//创建并打开一个数据库sqlite3 *db = NULL;if(sqlite3_open("./mysql.db",&db) != SQLITE_OK){fprintf(stderr,"sqlite3_open: %s __%d__\n",sqlite3_errmsg(db),__LINE__);return -1;}printf("open datebase success...\n");//创建一个表char *sql = "create table if not exists stu (id int,name char,score float);";char *errmsg = NULL;if(sqlite3_exec(db,sql,NULL,NULL,&errmsg) != SQLITE_OK){fprintf(stderr,"sqlite3_exec: %s __%d__\n",errmsg,__LINE__);return -1;}printf("create table stu success...\n");char choose = 0;while(1){printf("------------------------------\n");printf("----------1.INSERT------------\n");printf("----------2.DELETE------------\n");printf("----------3.UPDATE------------\n");printf("----------4.SELECT------------\n");printf("----------5.EXIT--------------\n");printf("------------------------------\n");printf("please enter>>>");choose = getchar();while(getchar()!=10);switch(choose){case '1':do_insert(db);break;case '2'://	do_delete();break;case '3'://	do_update();break;case '4'://	do_select();break;case '5':goto END;default:printf("enter error\n");}}END://关闭数据库if(sqlite3_close(db) != SQLITE_OK){fprintf(stderr,"sqlite3_close: %s __%d__\n",sqlite3_errmsg(db),__LINE__);return -1;}return 0;
}
void do_insert(sqlite3 *db)
{char sql[128] = ""; char id = 0;char name[20] = "";float score = -1;char *errmsg = NULL;printf("please enter id>>>");id = getchar();getchar();printf("please enter name>>>");scanf("%s",name);getchar();printf("please enter score>>>");scanf("%f",&score);getchar();sprintf(sql,"insert into stu values (%d,'%s',%f);",id,name,score);if(sqlite3_exec(db,sql,NULL,NULL,&errmsg) != SQLITE_OK){fprintf(stderr,"sqlite3_exec: %s __%d__\n",errmsg,__LINE__);return;}printf("insert success...\n");return;
}

二、导入电子词典

#include <stdio.h>
#include <sqlite3.h>
#include <string.h>
void do_insert(sqlite3 *db);
int main(int argc, const char *argv[])
{//创建并打开一个数据库sqlite3 *db = NULL;if(sqlite3_open("./mysql.db",&db) != SQLITE_OK){fprintf(stderr,"sqlite3_open: %s __%d__\n",sqlite3_errmsg(db),__LINE__);return -1;}printf("open datebase success...\n");//创建一个表char *sql = "create table if not exists dict (id int,words char,trans char);";char *errmsg = NULL;if(sqlite3_exec(db,sql,NULL,NULL,&errmsg) != SQLITE_OK){fprintf(stderr,"sqlite3_exec: %s __%d__\n",errmsg,__LINE__);return -1;}printf("create table stu success...\n");//插入单词int res = -1;int i = 0;char c = 0;char words[64] = "";char trans[128] = "";char mysql[256] = "";FILE *fp = fopen("./dict.txt","r");if(fp == NULL){perror("open");return -1;}while(1){bzero(words,sizeof(words));res = fscanf(fp,"%s",words);if(res == EOF)break;while(1){bzero(trans,sizeof(trans));fscanf(fp,"%c",trans);if(strcmp(trans," ") != 0)break;}fseek(fp,-1,SEEK_CUR);bzero(trans,sizeof(trans));while(1){fscanf(fp,"%s",trans+strlen(trans));fscanf(fp,"%c",&c);if(c == '\n')break;}sprintf(mysql,"insert into dict values (%d,'%s','%s');",++i,words,trans);if(sqlite3_exec(db,mysql,NULL,NULL,&errmsg) != SQLITE_OK){fprintf(stderr,"sqlite3_exec: %s %d __%d__\n",errmsg,sqlite3_errcode(db),__LINE__);return -1;}}//关闭数据库if(sqlite3_close(db) != SQLITE_OK){fprintf(stderr,"sqlite3_close: %s __%d__\n",sqlite3_errmsg(db),__LINE__);return -1;}return 0;
}