//-------------------------------------------------------------------
//	sqroots.cpp
//
//	This program calculates and displays a mathematical table of 
//	square-roots to four-place accuracy of the positive integers
//	up to one hundred.  It calls a subroutine named 'int2root()'
//	that accepts a positive integer and the address of a buffer,
//	returning the formatted table-entry in that supplied buffer.
//
//		compile using:  g++ sqroots.cpp -o sqroots 
//		execute using:  ./sqroots
//
//	programmer: ALLAN CRUSE
//	written on: 06 APR 2008
//-------------------------------------------------------------------

#include <stdio.h>	// for printf()  
#include <math.h>	// for sqrt()

char	root[ 20 ] = {0};

void int2root( unsigned int x, char *buf )
{
	if ( x > 100 ) return;
	else 	sprintf( buf, "  %3d  %.4f  ", x, sqrt( x ) );
}

int main( int argc, char **argv )
{
	printf( "\n%50s\n", "TABLE OF SQUARE ROOTS" );

	for (int i = 1; i <= 20; i++)
		{
		printf( "\n" );
		for (int j = 0; j < 100; j+=20)
			{
			int2root( i+j, root ); 
			printf( "%s", root );
			} 
		}
	printf( "\n\n" );
}