c++ - 在 Visual Studio 2017 中构建程序时出错

Question

关于必须定义的入口点弹出错误，指

if (sqlite3_open("C:\ProgramData\PROISER\ISASPSUS\datastore\dsfile.db", &db) != SQLITE_OK) {
        printf("ERROR: can't open database: %s\n", sqlite3_errmsg(db));
        sqlite3_close(db);
        return found;`

我正在使用带有 c++/sqlite3 库的 Visual Studio Community 2017。

这是整个代码：

    #include <stdio.h>
#include <string>
using std::string;
#include <sstream>
using std::stringstream;
using namespace std;
#include "C:\\Users\\santiago.corso\\Desktop\\sqlite-amalgamation-3240000 (1)\\sqlite-amalgamation-3240000\\sqlite3.h" 
bool find_analysis(int _id)
{
    bool found = false;
    sqlite3* db;
    sqlite3_stmt* stmt;
    stringstream ss;

    // create sql statement string
    // if _id is not 0, search for id, otherwise print all IDs
    // this can also be achieved with the default sqlite3_bind* utilities
    if (_id) { ss << "select * from analysis where id = " << _id << ";"; }
    else { ss << "select * from analysis;"; }
    string sql(ss.str());

    //the resulting sql statement
    printf("sql: %s\n", sql.c_str());

    //get link to database object
    if (sqlite3_open("C:\\ProgramData\\PROISER\\ISASPSUS\\datastore\\dsfile.db", &db) != SQLITE_OK) {
        printf("ERROR: can't open database: %s\n", sqlite3_errmsg(db));
        sqlite3_close(db);
        return found;
    }

    // compile sql statement to binary
    if (sqlite3_prepare_v2(db, sql.c_str(), -1, &stmt, NULL) != SQLITE_OK) {
        printf("ERROR: while compiling sql: %s\n", sqlite3_errmsg(db));
        sqlite3_close(db);
        sqlite3_finalize(stmt);
        return found;
    }

    // execute sql statement, and while there are rows returned, print ID
    int ret_code = 0;
    while ((ret_code = sqlite3_step(stmt)) == SQLITE_ROW) {
        printf("TEST: ID = %d\n", sqlite3_column_int(stmt, 0));
        found = true;
    }
    if (ret_code != SQLITE_DONE) {
        //this error handling could be done better, but it works
        printf("ERROR: while performing sql: %s\n", sqlite3_errmsg(db));
        printf("ret_code = %d\n", ret_code);
    }

    printf("entry %s\n", found ? "found" : "not found");

    //release resources
    sqlite3_finalize(stmt);
    sqlite3_close(db);

    return found;
}

该程序的全部目的是读取数据库中的更改作为第一部分。第二部分，将更改导出到 excel 文件（我还没有从这部分开始）。

在另一部分，我正在其他 .cpp 中构建相同的程序，它会做同样的事情，但以另一种方式编写。我在这段代码中有一部分的工作是寻找文件的结尾并从那里开始阅读：

    void recordarposicion(){
int feof;
if (fseek(dsfile, 0L, SEEK_END)==feof)
printf("%i = fread(dsfile)" );
}

标签： c++sqlite