Probleme manipulation fichier txt

Bonjour, j'ai fait un petit programme de manipulation entre fichier txt, et ca fonctionne pas, les fichiers de sorties ne contiennent que des zéros, pourtant avec le cout<< , je vois les données

// difference.cpp : Defines the entry point for the console application.
// TotalEnergy-incident*rad_bd_0+optique*rad_bd_0
 
#include "stdafx.h"
#include <vector>
 
#include <iostream>
using namespace std;
 
//Variable1
const unsigned int SIZE=10000000;
int nt=2480; //header=2481, on enlève 1, on mettra nt=2480
int a,r,i;
char str[32],str1[32],str2[32],str3[32],str4[32],str5[32],str6[32],str7[32],str8[32],str9[32],str10[32];
float x, y, z, s;
struct inf1 {
  float X, Y, Z ;
  float F ; 
}info1[SIZE];
struct inf2 {
  float X, Y, Z ;
  float F ; 
}info2[SIZE];
struct inf3 {
  float X, Y, Z ;
  float F ; 
}info3[SIZE];
struct inf4 {
  float X, Y, Z ;
  float F ; 
}info4[SIZE];
struct inf5 {
  float X, Y, Z ;
  float F ; 
}info5[SIZE];
 
 
int main()
{
FILE *f1 = fopen("C:\\Sample\\lens-in-totalenergy.prof", "r");
fscanf(f1, "%s %s %s \n", str1, str2, str3);		 
fscanf(f1, "%s \n", str4);
	   for (a=0;a<=nt;a++){
          fscanf(f1, "%f \n", &x);
		  info1[a].X=x;
            };
fscanf(f1, "%s \n", str5);
fscanf(f1, "%s \n", str6);
        for (a=0;a<=nt;a++){
          fscanf(f1, "%f \n", &y);
		  info1[a].Y=y;
            };
fscanf(f1, "%s \n", str7);
fscanf(f1, "%s \n", str8);
	     for (a=0;a<=nt;a++){
          fscanf(f1, "%f \n", &z);
		  info1[a].Z=z;
            };
fscanf(f1, "%s \n", str9);
fscanf(f1, "%s \n", str10);
	     for (a=0;a<=nt;a++){
          fscanf(f1, "%f \n", &s);
		  info1[a].F=s;
	       };
fclose(f1);
 
//*******************************************************************************************
 
FILE *f2 = fopen("C:\\Sample\\lens-in-incidentrad-bd0.prof", "r");
fscanf(f2, "%s %s %s \n", str1, str2, str3);
fscanf(f2, "%s \n", str4);
	   for (a=0;a<=nt;a++){
          fscanf(f2, "%f \n", &x);
		  info2[a].X=x;
            };
fscanf(f2, "%s \n", str5);
fscanf(f2, "%s \n", str6);
        for (a=0;a<=nt;a++){
          fscanf(f2, "%f \n", &y);
		  info2[a].Y=y;
            };
fscanf(f2, "%s \n", str7);
fscanf(f2, "%s \n", str8);
	     for (a=0;a<=nt;a++){
          fscanf(f2, "%f \n", &z);
		  info2[a].Z=z;
            };
fscanf(f2, "%s \n", str9);
fscanf(f2, "%s \n", str10);
	     for (a=0;a<=nt;a++){
          fscanf(f2, "%f \n", &s);
		  info2[a].F=s;
	       };
fclose(f2);
 
//********************************************************************************************
FILE *f3 = fopen("C:\\Sample\\lens-in-opt-bd0.prof", "r");
fscanf(f3, "%s %s %s \n", str1, str2, str3);
fscanf(f3, "%s \n", str4);
	   for (a=0;a<=nt;a++){
          fscanf(f3, "%f \n", &x);
		  info3[a].X=x;
            };
fscanf(f3, "%s \n", str5);
fscanf(f3, "%s \n", str6);
        for (a=0;a<=nt;a++){
          fscanf(f3, "%f \n", &y);
		  info3[a].Y=y;
            };
fscanf(f3, "%s \n", str7);
fscanf(f3, "%s \n", str8);
	     for (a=0;a<=nt;a++){
          fscanf(f3, "%f \n", &z);
		  info3[a].Z=z;
            };
fscanf(f3, "%s \n", str9);
fscanf(f3, "%s \n", str10);
	     for (a=0;a<=nt;a++){
          fscanf(f3, "%f \n", &s);
		  info3[a].F=s;
	       };
fclose(f3);
 
//******************************************************************************************
for (a=0;a<=nt;a++){
	   info4[a].F=info1[a].F-info2[a].F+info3[a].F;
	   info5[a].F=-info4[a].F;
           };
 
//******************************************************************************************
FILE* fichier = NULL;
{fichier = fopen("C:\\Sample\\lens-in-heatflux.prof", "a+");
fprintf(fichier,"((lens point %d)\n",nt);
fprintf(fichier,"(x\n");
for (i=0;i<nt;i++){
x=info1[i].X;
cout<<x<<endl;
fprintf(fichier,"%.9f\n",&x);
    }
fprintf(fichier,")\n");
fprintf(fichier,"(y\n");
for (i=0;i<nt;i++){
fprintf(fichier,"%.9f\n",&info1[i].Y);
    }
fprintf(fichier,")\n");
fprintf(fichier,"(z\n");
for (i=0;i<nt;i++){
fprintf(fichier,"%.9f\n",&info1[i].Z);
    }
fprintf(fichier,")\n");
fprintf(fichier,"(lens-inheatflux\n");
for (i=0;i<nt;i++){
fprintf(fichier,"%.5f\n",&info4[i].F);
    }
fprintf(fichier,")\n");
fprintf(fichier,")\n");
fclose(fichier);
}
 
//********************************************************************
FILE* fichier1 = NULL;
{fichier1 = fopen("C:\\Sample\\neglens-in-heatflux.prof", "a+");
fprintf(fichier1,"((neglens point %d)\n",r);
fprintf(fichier1,"(x\n");
for (i=0;i<nt;i++){
fprintf(fichier1,"%.9f\n",&info1[i].X);
    }
fprintf(fichier1,")\n");
fprintf(fichier1,"(y\n");
for (i=0;i<nt;i++){
fprintf(fichier1,"%.9f\n",&info1[i].Y);
    }
fprintf(fichier1,")\n");
fprintf(fichier1,"(z\n");
for (i=0;i<nt;i++){
fprintf(fichier1,"%.9f\n",&info1[i].Z);
    }
fprintf(fichier1,")\n");
fprintf(fichier1,"(neglens-inheatflux\n");
for (i=0;i<nt;i++){
fprintf(fichier1,"%.5f\n",&info5[i].F);
    }
fprintf(fichier1,")\n");
fprintf(fichier1,")\n");
fclose(fichier1);
}
return 0;
}