class 奇偶求和

class1.cpp

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+//奇偶求和
+
+#include<iostream>
+
+using namespace std;
+
+int main(){
+    int n,sum1=0,sum2=0;
+    cin >>n;
+
+    for (int i = 1; i<=n; i+=2)
+    {
+        sum1+=i;
+    }
+    for (int i = 2; i <= n; i+=2)
+    {
+        sum2+=i;
+    }
+    cout <<sum1<<" "<<sum2<<endl;
+    return 0;
+}