Cpp class exercise 2：修订间差异

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@@ 第62行： / 第62行： @@
 int main()
 {
      int i,j,k;
-    do
+	srand((int)time(0));//用系统时间来做种子
-	{
-		srand((int)time(0));//用系统时间来做种子
+	i = random(100);
+	j = random(100);
-		i = random(100);
+	k = i + j ;
-		j = random(100);
+	int answer;
-		k = i + j ;
+    cout << i <<"+" <<j <<"= ?" << endl;
-		int answer;
+    cin >> answer;
-	    cout << i <<"+" <<j <<"= ?" << endl;
+    if(answer == k)
-	    cin >> answer;
+    {
-	    if(answer == k)
+    	cout << "回答正确！"<< endl;
-	    {
+    	cout << i <<"+" <<j <<"=" << k << endl;
-	    	cout << "回答正确！"<< endl;
+    }
-	    	cout << i <<"+" <<j <<"=" << k << endl;
+    else
-	    }
+    {
-	    else
+    	cout << "回答错误！";
-	    {
+    	cout << i <<"+" <<j <<"=" << k << endl;
-	    	cout << "回答错误！";
+    }
-	    	cout << i <<"+" <<j <<"=" << k << endl;
-	    }
-	} while(1==1);
 	return 0;
 }