long double: Formatting includes precision, width, alignment, and format of large numbers.

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

int main(){
 long double number,factorial;

 number=1.0;
 factorial=1.0;

 cout.precision(0);           // no decimal point
 cout.setf(ios::left);        // left justify numbers
 cout.setf(ios::fixed);       // use fixed format
  
 for(int i=0;i<25;i++) {
   factorial*=number;
   number=number+1.0;
   cout.width(30);            // width of 30 characters
   cout << factorial << endl;
 }

 return (0);
}

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long double: Formatting includes precision, width, alignment, and format of large numbers. : Double « Data Type « C++

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