Calculate average grade-c++

Use cout to achieve decimal point output and retention control

Topic description
Input the grades of 5 students (integer) from the keyboard and find their average grade (floating point number, one decimal place).

Input description:
Enter 5 integers in a row (range 0~100) in one line, separated by spaces.
Output description:
one line, output the average of 5 numbers (with one decimal place).
Example 1
Input
75 80 43 67 96
Output
72.2

#include<iostream>
#include<iomanip>
using namespace std;
int main ()
{
    
    
    int a,b,c,d,e;
    double average;
    cin>>a>>b>>c>>d>>e;
    average=(a+b+c+d+e)/5.0;
    //强制显示小数位数
    cout.setf(ios::fixed);
    cout.precision(1);
    cout<<average;
    //cout<<fixed<<setprecision(1)<<aveeage;
}