Erreur de segmentation

Bonjour, mon probleme est l'erreur de segmentation pouvez vous m'aide?
merci d'avance .
voila mon prgramme

#include <stdio.h>

#include <stdlib.h>
int X[10],d[10];

float W[10],tita,y[10] ,u[10] ,som, lamda;

void chargerBaseDesX()

{

FILE* XI = fopen("XI.txt","r");



int i;



for(i=0; i<10; i++)

{

if (EOF == fscanf(XI,"%d",X+i)) // 'X+i' <=> '&X[i]'

break;

if (EOF == fscanf(XI,"%d",d+i))

break;

}



fclose(XI);

}

/*******************************************/



void chargerBaseDesW()

{

FILE* WI = fopen("WI.txt","r");



int i;



for(i=0; i<10; i++)

{

if (EOF == fscanf(WI,"%f",W+i))

break;

if (EOF == fscanf(WI,"%d",d+i))

break;

}



fclose(WI);

}
/********************************/
/* procedure charger base de DI*/

void chargerBaseDesD()

{

FILE* DI = fopen("DI.txt","r");



int i;



for(i=0; i<10; i++)

{

if (EOF == fscanf(DI,"%d",d+i))

break;

if (EOF == fscanf(DI,"%d",d+i))

break;

}



fclose(DI);

}

/****************************MAIN***************/

int main()

{

int i,t;

chargerBaseDesX();

chargerBaseDesW();
chargerBaseDesD();

for(i=0; i<10; i++)

{
printf( " \n les echantilions%d \n",i);

printf("%d\n",X[i]);

printf( "\n W%d \n",i);

printf("%f\n",W[i]);

printf("le sortie désiré%d\n",i);

printf("%d\n",d[i]);

if (d[i]==1)

{

printf ("impaire C1 \n");

}

else

{

if(d[i]==0)

printf("paire C2\n");



tita=0.2;

lamda=0.2;

som=0;



som=(som+(W[i]*X[i]));

printf("%f",som);



u[i]=( som-tita);

printf("U%d\n",i);

printf("%f\n", u[i]);



}



}




}