#include "ocilib.h"

void err_handler(OCI_Error *err)
{
    printf("%s\n", OCI_ErrorGetString(err));
}

int main(void)
{
    OCI_Connection *cn;
    OCI_Statement  *st;
    int res = 0;

    if (!OCI_Initialize(err_handler, NULL, OCI_ENV_DEFAULT))
    {
        return EXIT_FAILURE;
    }

    cn = OCI_ConnectionCreate("db", "usr", "pwd", OCI_SESSION_DEFAULT);
    st = OCI_StatementCreate(cn);

    /* pl/sql call */

    OCI_Prepare(st, "begin :res := trunc(sysdate+1)-trunc(sysdate-1); end;");
    OCI_BindInt(st, ":res", &res);
    OCI_Execute(st);

    printf("result : %i\n", res);
 
    OCI_StatementFree(st);
    OCI_ConnectionFree(cn);
    OCI_Cleanup();

    return EXIT_SUCCESS;
}