[BCC32 Error] Unit1.cpp(32): E2451 Undefined symbol 'rowc'

#include <vcl.h>
 
#pragma hdrstop
 
#include "Unit1.h"
 
//---------------------------------------------------------------------------
 
#pragma package(smart_init)
 
#pragma resource "*.dfm"
 
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{ StringGrid1->RowCount = 1 + StrToInt(Edit1->Text);
Button2->Enabled = true;
StringGrid1->Cells[0][0] = "Выпуск в ед.вр";
StringGrid1->Cells[1][0] = "Общие затраты";}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
 
float* tc = new float[rowc];
float* q = new float[rowc];
float fc = 0;
float* vc = new float[rowc];
float* mc = new float[rowc];
float* atc = new float[rowc];
float* avc = new float[rowc];
float* afc = new float[rowc];
StringGrid1->ColCount = 8;
StringGrid1->Cells[2][0] = "FC";
StringGrid1->Cells[3][0] = "VC";
StringGrid1->Cells[4][0] = "MC";
StringGrid1->Cells[5][0] = "ATC";
StringGrid1->Cells[6][0] = "AVC";
StringGrid1->Cells[7][0] = "AFC";
int rowc = StringGrid1->RowCount - 1;
for (int i = 0; i < rowc; i++) {
q[i] = StrToFloat(StringGrid1->Cells[0][i + 1]);
if (StrToInt(StringGrid1->Cells[0][i + 1]) == 0) {
fc = StrToFloat(StringGrid1->Cells[1][i + 1]);}}
for (int i = 0; i < rowc; i++) {
tc[i] = StrToFloat(StringGrid1->Cells[1][i + 1]);
vc[i] = tc[i] - fc;
if (q[i] > 0 && i > 0) {
mc[i] = (tc[i] - tc[i - 1]) / (q[i] - q[i - 1]);
atc[i] = tc[i] / q[i];
afc[i] = fc / q[i];
avc[i] = vc[i] / q[i];
StringGrid1->Cells[4][i + 1] = FloatToStr(mc[i]);
StringGrid1->Cells[5][i + 1] = FloatToStr(atc[i]);
StringGrid1->Cells[6][i + 1] = FloatToStr(avc[i]);
StringGrid1->Cells[7][i + 1] = FloatToStr(afc[i]);}
StringGrid1->Cells[2][i + 1] = FloatToStr(fc);
StringGrid1->Cells[3][i + 1] = FloatToStr(vc[i]);}}

void __fastcall TForm1::Button2Click(TObject *Sender)
{
 int rowc = StringGrid1->RowCount - 1;
 float* tc = new float[rowc];
...