delete pics to save space

history_source/ccf 入门篇/U2/2.4.2.cpp

@@ -0,0 +1,12 @@
+#include<iostream>
+#include<cmath>
+using namespace std;
+int main()
+{
+	float a,b,c,p;
+	while(true){
+		cin>>a>>b>>c;
+		p=(a+b+c)/2.0;
+		cout<<"S="<<sqrt(p*(p-a)*(p-b)*(p-c))<<endl;
+	}
+}