20 lines
521 B
C++
20 lines
521 B
C++
#include<iostream>
|
|
#include<iomanip>
|
|
using namespace std;
|
|
|
|
int main(int argc, char const *argv[])
|
|
{
|
|
char s[20]="this is a string";
|
|
double digit=-36.96656;
|
|
cout<<setw(30)<<left<<setfill('*')<<s<<endl;
|
|
cout<<dec<<setprecision(4)<<digit<<endl;
|
|
cout<<dec<<15<<endl;
|
|
//setbase(int x)设置进制后，后面所有操作都是按照这个进制来计算！
|
|
cout<<setbase(10)<<15<<endl;
|
|
//四舍五入,并保留2位有效数组
|
|
float x=6.6937;
|
|
cout<<float(int(x*1000+0.5)/1000.0)<<endl;
|
|
system("pause");
|
|
return 0;
|
|
}
|