private void btnExercicio1_Click(object sender, EventArgs e)
{
frmExercicio1 frm = new frmExercicio1();
frm.WindowState = FormWindowState.Maximized;
frm.Show();
}
private void exercício2ToolStripMenuItem_Click(object sender, EventArgs e)
{
frmExercicio1 frm1 = new frmExercicio1();
frm1.MdiParent = this;
frm1.WindowState = FormWindowState.Maximized;
frm1.Show();
}