//
#include<iostream>
using namespace std;
int main() {
const float PI = 3.141; // 3.141 is floating point constant while PI is a constant float.
cout << PI;
return 0;
}
原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/tech/pnotes/265563.html