//*************************************//
//******** created by mamo139 *********//
//*** http://mamo139.altervista.org ***//
//*************************************//

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

int main (){
    //***** PARAMETRI *****//
    double inizio = -500;
    double fine = 1.5;
    
    double media = 0;
    double varianza = 1;    
    //*********************//
    
    double base = 0.001;
    double integrale = 0;

    double x;
    double y;
    


    printf("integrale della Normale(%f,%f) da %f a %f = ",media,varianza,inizio,fine);    
    
    for(x=inizio; x<fine ;x=x+base){
             y = 1/sqrt(2*3.14159265* varianza) * pow(2.718282, -(x-media)*(x-media)/(2*varianza) );
             integrale = integrale + base*y;
             
    }
    
    printf("%f",integrale);
    
    getchar();
    return 0;
}