CPP

setprecision in c++

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

int main()
{
   int num = 45;
  cout << "it is: " << fixed << setprecision(2) << num << " the end"<< endl;
  
  return 0;
}

setprecision in c++

double num = 3.14;
 
    cout << fixed; 
    // Using setprecision()
    cout << "Setting the precision using"
         << " setprecision to 5: 
"
         << setprecision(5);
 
    cout << num << endl;

/*
Using setprecision you don't get to set the precision after the decimal point.
So for that reason you can go with God Language C using scanf.
Implementation for the same below
*/

//Use this for getting upto 2 decimal value after the decimal point
#include<cstdio>

int main() {
    double total;
    cin>>total;
    printf("%.2f
", total);
}

setprecision c++

  cout << "Setting the precision using"
           << " setprecision to 9 : 
 "
         << setprecision(9);

 // this is the output 
Setting the precision using setprecision to 9: 
3.140000000

setprecision

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#include <iostream> //standard input-output stream
#include <iomanip>  //input_output_manipulation
using namespace std;
int main(int argc, char const *argv[])
{
    float R;
    cin >> R;
    float A = 3.14159 * R * R;
    cout << "A=" << fixed << setprecision(4) << A << endl;
    return 0;
}
// setprecision counts whole number >>>  EX:: 34.1234 is equal setprecision(6)
// When the fixed keyword is used, the argument in the setprecision()
// function specifies the number of decimal places to be printed in the output.

setprecision in c++

#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
  int i = 18;
  cout<<setw(10)i;
}