更新了许多

圆柱体的表面积.cpp

@@ -0,0 +1,16 @@
+#include <iostream>
+#include <cmath>
+#include <cstdlib>
+#include <cstdio>
+#include <iomanip>
+using namespace std;
+int main(){
+	const double pi = acos(-1.0);
+	double r;
+	double h;
+	cin >>r>>h;
+	cout <<"Area = "<<fixed<<setprecision(3)<<2*pi*r*h+2*pi*pow(r,2);
+	return 0;
+}
+
+