float有效位数
#include <iostream>
using namespace std;
int main()
{
float a = 2.31111111111;
cout<<(float)a<<endl;
float b = 22.221111111111;
cout<<b<<endl;
float c = 0.22111111111;
cout<<c<<endl;
return 1;
}
2.31111
22.2211
0.221111
补充:软件开发 , C语言 ,