Question

Checkpoint 3.23

Assume the following variable definition appears in a program:

double number = 12.3456;

Write a cout statement that uses the setprecision manipulator to display the number variable with 4 significant digits. (Assume that the program includes the necessary header file for the setprecision manipulator.)

Answer 1

#include<bits/stdc++.h>
#include <iomanip> // needed to use manipulators with parameters (precision, width)
using namespace std;
  
int main()
{
double number = 12.3456;
cout <<setprecision(4);
cout<<number<<endl;
}