How to use setprecision in C++

Question

I am new in C++ , i just want to output my point number up to 2 digits. just like if number is 3.444, then the output should be 3.44 o

Answer 1

Below code runs correctly.

#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
    double num1 = 3.12345678;
    cout << fixed << showpoint;
    cout << setprecision(2);
    cout << num1 << endl;
}