#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#include "calnum.h"

double f( double x ){
        return (x*x*x*x + 5*x - 4);
}


double main (int argc , char *argv[]) {

        double a= argc > 1 ? atof(argv[1] ) : 0;
        double b= argc >2 ? atof( argv[2] ) : M_PI;
        int n= argc >3 ? atoi( argv[3] ) : 1000;

        if(argv[4] == "prostokat")
                 printf( "Int <%g,%g>[%i] ( x^4 + 5*x - 4 ) = %g\n", a, b, n, calnum1( f, a, b, n ) );

        else if(argv[4] == "trapez")
                 printf( "Int <%g,%g>[%i] ( x^4 + 5*x - 4 ) = %g\n", a, b, n, calnum2( f, a, b, n ) );

        else if(argv[4] == "simpson")
                printf( "Int <%g,%g>[%i] ( x^4 + 5*x - 4 ) = %g\n", a, b, n, calnum3( f, a, b, n ) );

        else {

                printf( "Int <%g,%g>[%i] ( x^4 + 5*x - 4 ) = %g\n", a, b, n, calnum1( f, a, b, n ) );

                printf( "Int <%g,%g>[%i] ( x^4 + 5*x - 4 ) = %g\n", a, b, n, calnum2( f, a, b, n ) );

                printf( "Int <%g,%g>[%i] ( x^4 + 5*x - 4 ) = %g\n", a, b, n, calnum3( f, a, b, n ) );

}

        return 0;
}