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Fig10_45.cpp - Better algorithm to replace fig10_43.c (see text)
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#include <iostream.h>
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#include "vector.h"
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/* START: Fig10_45.txt */
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double eval( int n )
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{
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vector<double> c( n + 1 );
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c[ 0 ] = 1.0;
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for( int i = 1; i <= n; i++ )
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{
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double sum = 0.0;
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for( int j = 0; j < i; j++ )
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sum += c[ j ];
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c[ i ] = 2.0 * sum / i + i;
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}
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return c[ n ];
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}
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/* END */
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int main( )
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{
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cout << "eval( 10 ) = " << eval( 10 ) << endl;
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return 0;
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}
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