C Implementation

/* This program approximates the integral e^(-x^2/2) from 0 to 1 by using Monte Carlo integration.

*/

#include <stdio.h>

#include <stdlib.h>

#include <math.h>

#define dran(u1) \

( (rand()/(double) \

RAND_MAX)*(u1))

#define Prompt(p) printf(p)

#define Response(r) \

scanf("%d", &r)

#define Answer(a) \

printf("Integral = %f\n", a)

double area(int);

main()

{ . . .

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