delete pics to save space

history_source/ccf 入门篇/U2/2.6.5.cpp

@@ -0,0 +1,15 @@
+#include<iostream>
+#include<cmath>
+#include<cstdlib>
+#include<ctime>
+using namespace std; 
+int main()
+{
+	srand(time(0));
+	int a,b,c;
+	a=rand()%1000000+1;
+	b=rand()%1000000+1;
+	c=rand()%1000000+1;
+	cout<<a<<"-"<<b<<"+"<<c<<"+"<<c<<"*("<<a<<"-"<<b<<")="<<a-b+c+c*(a-b)<<endl;
+	while(true);
+}