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void TMDIChild::Scale()
{
        Byte *tptr,*dptr;
        Graphics::TBitmap *AttendBitmap=new Graphics::TBitmap();
        AttendBitmap=OriginalBitmap;
        AttendBitmap->PixelFormat=pf24bit;
        AttendBitmap->Width=OriginalBitmap->Width;
        AttendBitmap->Height=OriginalBitmap->Height;
        Graphics::TBitmap *TempBitmap=new Graphics::TBitmap();
        TempBitmap->Assign(OriginalBitmap);
        TempBitmap->PixelFormat=pf24bit;
        int down,right;
        int            w,h,newW,newH;
        double         dX,dY,x,y;
        double         scalar;                   // Zoom scalar
        int            i,j;
        int            ix,iy;                    // integer value of (x,y)
        float         fx,fy;                    // float value of (x,y)
        unsigned char  clr,
                 clrR,clrG,clrB,
                 nclr1,nclr2,nclr3,nclr4;  // color of neighbor 4 pixel
 
        w = AttendBitmap->Width;
        h = AttendBitmap->Height;
        scalar = StrToFloat(ScaDlg->Edit1->Text);
        newW=(int)((double)w*scalar);
        newH=(int)((double)h*scalar);
        TempBitmap->Width=newW;
        TempBitmap->Height=newH;
        /* Caculate the step size of movement */
        dX = (double)w/(double)newW;
        dY = (double)h/(double)newH;
        for(j = 0 ; j < newH ; j++)
        {
                y = dY*(double)j;
                iy = (int)y;
                fy = y - (float)iy;
                down=iy+1;
                if (down==h)
                        down=0;
                tptr=(Byte*)AttendBitmap->ScanLine[iy];
                dptr=(Byte*)AttendBitmap->ScanLine[down];
                for(i =0 ; i < newW;i++)
                {
                        x = dX*(double)i;
                        ix = (int)x;
                        fx = x - (float)ix;
                        right=ix+1;
                        if (right==w)
                                right=0;
                        nclr1=tptr[3*ix+2];
                        nclr2=tptr[3*right+2];
                        nclr3=dptr[3*ix+2];
                        nclr4=dptr[3*right+2];
                        // Bilinear
                        clrR=(Byte)((1.0-fx)*(1.0-fy)*(double)nclr1+(fx)*(1.0-fy)
                        *(double)nclr2+(1.0-fx)*(fy)*(double)nclr3+(fx)*(fy)*(double)nclr4);
 
                        nclr1=tptr[3*ix+1];
                        nclr2=tptr[3*right+1];
                        nclr3=dptr[3*ix+1];
                        nclr4=dptr[3*right+1];
                        // Bilinear
                        clrG=(Byte)((1.0-fx)*(1.0-fy)*(double)nclr1+(fx)*(1.0-fy)
                        *(double)nclr2+(1.0-fx)*(fy)*(double)nclr3+(fx)*(fy)*(double)nclr4);
 
                        nclr1=tptr[3*ix];
                        nclr2=tptr[3*right];
                        nclr3=dptr[3*ix];
                        nclr4=dptr[3*right];
                        // Bilinear
                        clrB=(Byte)((1.0-fx)*(1.0-fy)*(double)nclr1+(fx)*(1.0-fy)
                        *(double)nclr2+(1.0-fx)*(fy)*(double)nclr3+(fx)*(fy)*(double)nclr4);
                        TempBitmap->Canvas->Pixels[i][j] = (TColor)RGB(clrR,clrG,clrB);
                }
        }
        Image1->Width=newW;
        Image1->Height=newH;
        OriginalBitmap->Width=newW;
        OriginalBitmap->Height=newH;
        Image1->Picture->Bitmap=TempBitmap;
        Image1->Picture->Assign(TempBitmap);
        OriginalBitmap=TempBitmap;
        OriginalBitmap->Assign(TempBitmap);
        delete AttendBitmap,TempBitmap;
}

prog.cpp:1: error: ‘TMDIChild’ has not been declared
prog.cpp: In function ‘void Scale()’:
prog.cpp:3: error: ‘Byte’ was not declared in this scope
prog.cpp:3: error: ‘tptr’ was not declared in this scope
prog.cpp:3: error: ‘dptr’ was not declared in this scope
prog.cpp:4: error: ‘Graphics’ has not been declared
prog.cpp:4: error: ‘AttendBitmap’ was not declared in this scope
prog.cpp:4: error: expected type-specifier before ‘Graphics’
prog.cpp:4: error: expected `;' before ‘Graphics’
prog.cpp:5: error: ‘OriginalBitmap’ was not declared in this scope
prog.cpp:6: error: ‘pf24bit’ was not declared in this scope
prog.cpp:9: error: ‘Graphics’ has not been declared
prog.cpp:9: error: ‘TempBitmap’ was not declared in this scope
prog.cpp:9: error: expected type-specifier before ‘Graphics’
prog.cpp:9: error: expected `;' before ‘Graphics’
prog.cpp:25: error: ‘ScaDlg’ was not declared in this scope
prog.cpp:25: error: ‘StrToFloat’ was not declared in this scope
prog.cpp:41: error: expected primary-expression before ‘)’ token
prog.cpp:41: error: expected `;' before ‘AttendBitmap’
prog.cpp:42: error: expected primary-expression before ‘)’ token
prog.cpp:42: error: expected `;' before ‘AttendBitmap’
prog.cpp:74: error: ‘TColor’ was not declared in this scope
prog.cpp:74: error: expected `;' before ‘RGB’
prog.cpp:77: error: ‘Image1’ was not declared in this scope
prog.cpp:85: error: type ‘<type error>’ argument given to ‘delete’, expected pointer
prog.cpp:19: warning: unused variable ‘clr’

Standard output is empty