today laster

3.14.cpp

@@ -73,4 +73,5 @@ int main(){
             cout <<"结果是:"<<C<<danwei<<endl;
             return 0;
         }
+    }
 }

class.cpp

@@ -0,0 +1,87 @@
+//do...while
+//计算各个数位之和
+
+#include<iostream>
+using namespace std;
+
+void while_1();
+void do_while();
+void huiwenshu();
+
+int main(){
+
+    int choose;
+    cout <<"选择"<<endl;
+    cout <<"1.do...while"<<endl;
+    cout <<"2.while"<<endl;
+    cout <<"3.回文数"<<endl;
+    cin >>choose;
+
+    if (choose == 2)
+    {
+        while_1();
+    }else if (choose == 1)
+    {
+        do_while();
+    }else if (choose == 3)
+    {
+        huiwenshu();
+    }else{
+        cout <<"输入错误!"<<endl;
+    }
+}
+
+void do_while(){
+    cout <<"已进入do..while"<<endl;
+    int CIN,andy;
+    int a,b,c;
+
+    do
+    {
+        cin >>CIN;
+        a = CIN / 100;
+        b= CIN / 10 % 10;
+        c = CIN % 10;
+
+        andy = a+b+c;
+        cout <<andy<<endl;
+    } while (CIN > 0);
+}
+
+void while_1(){
+    cout <<"已进入while"<<endl;
+    int CIN2,andy,a,b,c;
+    
+    while (CIN2 > 0)
+    {
+        cin >>CIN2;
+        a = CIN2 / 100;
+        b = CIN2 / 10 % 10;
+        b = CIN2 % 10;
+        andy = a+b+c;
+        cout <<andy<<endl;
+    }
+}
+
+void huiwenshu(){
+    while (true)
+    {
+        int n,ge,number = 0,number2;
+        cin >>n;
+        number2 = n;
+        do
+        {
+            ge = n%10;
+            number = number * 10 + ge;
+            n = n / 10;
+        } while (n > 0);
+
+        if (number != number2)
+        {
+            cout <<"NO!"<<endl;
+        }else
+        {
+            cout <<"YES!"<<endl;
+        }
+    }
+}