work07

8f69997b · 李楚霏 · 555f686f · 8f69997b
Commit 8f69997b authored Oct 24, 2020 by 李楚霏
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work07/7_13_1.cpp
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--- a/work07/7_13_1.cpp
+++ b/work07/7_13_1.cpp
+#include<iostream>
+using namespace std;
+
+double sum(int n1, int n2) {
+    return (double) (2.0 * n1 * n2 /(n1+ n2));
+}
+int main() {
+int n1, n2;
+while ((cin>>n1>>n2))
+{
+    /* code */
+    if (n1 ==0 || n2 ==0 ) break;
+    cout<<"sum:"<< sum(n1, n2)<<endl;
+}
+
+    return 0;
+}
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