// Array example for cs 149, spring 2001              v. 3/29/06
//   Illustrates use of setw and setprecision.

#include <iostream.h>
#include <iomanip.h>

int main ()
{

    const int N=100;
    double Sum=0.0;
    int i;

    // Print the same number using different setw and setprecision values
    // The second column of numbers is hard to read
    for ( i=1; i <= N; i++ ) {
	    Sum += i;
    	cout << setw( 5 ) << i << setw( 4 ) << Sum << endl;
      }
    cout << endl;

    // The second column is easier to read since the width is 6.
    for ( i=1; i <= N; i++ ) {
    	Sum += 10*i;
    	cout << setw( 5 ) << i << setw( 6 ) << Sum << endl;
    }
    cout << endl;

    // The second column prints with scientific notation; harder to read?
    for ( i=1; i <= N; i++ ) {
    	Sum += 10000*i;
    	cout << setw( 5 ) << i << setw( 12 ) << Sum << endl;
    }
    cout << endl;

    // The second column does not switch to scientific notation since a
    // larger precision is used.
    for ( i=1; i <= N; i++ ) {
    	Sum += 100000*i;
    	cout << setw( 5 ) << i << setw( 12 ) << setprecision( 12 ) << Sum << endl;
    }
    cout << endl;

	return 0;
}