简单计算器c++课程设计讲解

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}

pass3=0;

UpdateData(FALSE);

2、加减乘除和小数点的输入

void CLuxiaoyingDlg::OnJiaButton13() { }

void CLuxiaoyingDlg::OnJianButton14() { }

void CLuxiaoyingDlg::OnChengButton15() {

// TODO: Add your control notification handler code here UpdateData(TRUE);

m_str = m_str + \乘号 pass1=1;

UpdateData(FALSE);

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// TODO: Add your control notification handler code here UpdateData(TRUE);

m_str = m_str + \加号 pass1=1;

UpdateData(FALSE);

// TODO: Add your control notification handler code here UpdateData(TRUE);

m_str = m_str + \减号 pass1=1;

UpdateData(FALSE);

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}

void CLuxiaoyingDlg::OnChuButton16() { }

void CLuxiaoyingDlg::OnDianButton12() { }

3、清除功能的实现

void CLuxiaoyingDlg::OnClearButton17() {

// TODO: Add your control notification handler code here UpdateData(1); m_str=\

pass1=1;// 之前是否有操作符输入，有，则为1，无，则为0 pass2=1;//是否有小数点，有，则为0，无，则为1 pass3=1;// 之前是否有数字输入，有，则为0，无，则为1 UpdateData(0);

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// TODO: Add your control notification handler code here UpdateData(TRUE);

m_str = m_str + \除号 pass1=1;

UpdateData(FALSE);

// TODO: Add your control notification handler code here UpdateData(1); if(pass1==1&&pass2==1)

m_str+=\

pass2=0; UpdateData(0);

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}

4、cos功能的实现

void CLuxiaoyingDlg::OnCosButton23() {

// TODO: Add your control notification handler code here double a,itemp=0,rate=10.0; int i;

UpdateData(TRUE);

for(i=0;i

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if(isdigit(m_str.GetAt(i))) { }

else if(m_str.GetAt(i)=='.')

rate=0.1; if(rate==10.0) { } else { }

itemp=itemp+rate*(m_str.GetAt(i)-'0'); rate=rate/10;

if(i==m_str.GetLength()-1)

a=itemp;

itemp=itemp*rate+(m_str.GetAt(i)-'0'); if(i==m_str.GetLength()-1)

a=itemp;

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}

a=cos(a*3.1415926/180); m_str.Format(\pass1=0;

UpdateData(FALSE);

5、倒数功能的实现

void CLuxiaoyingDlg::OnDaoshuButton19() {

// TODO: Add your control notification handler code here double a,itemp=0,rate=10.0; int i;

UpdateData(TRUE);

for(i=0;i

if(isdigit(m_str.GetAt(i))) {

if(rate==10.0) { } else { }

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itemp=itemp*rate+(m_str.GetAt(i)-'0'); if(i==m_str.GetLength()-1)

a=itemp;

itemp=itemp+rate*(m_str.GetAt(i)-'0'); rate=rate/10;

if(i==m_str.GetLength()-1)

a=itemp;