diff --git a/Code-C/Makefile b/Code-C/Makefile
index 8b874a0..44a0a3d 100644
--- a/Code-C/Makefile
+++ b/Code-C/Makefile
@@ -1,5 +1,5 @@
 CC = gcc
 
 all: 
-	$(CC) -g fileGestion.c getArray.c average.c power.c queue.c simulateFlux.c main.c -lm -lpthread -o main 
+	$(CC) -g fileGestion.c getArray.c average.c growthRate.c power.c queue.c simulateFlux.c main.c -lm -lpthread -o main 
 	./main < ../02400031.TXT
\ No newline at end of file
diff --git a/Code-C/growthRate.c b/Code-C/growthRate.c
index 951e2c2..c381864 100644
--- a/Code-C/growthRate.c
+++ b/Code-C/growthRate.c
@@ -1,6 +1,7 @@
 #include "initialParameters.h"
 #include "fileGestion.h"
 #include "getArray.h"
+#include "growthRate.h"
 /**
  * @brief calculate de growth rate between to point next to each other
  * 
diff --git a/Code-C/growthRate.h b/Code-C/growthRate.h
index 3a1f118..1e0b201 100644
--- a/Code-C/growthRate.h
+++ b/Code-C/growthRate.h
@@ -1 +1,4 @@
-void growthRateFunction();
\ No newline at end of file
+#include <math.h>
+#include <stdbool.h>
+
+void growthRateFunction(double *dataLign);
\ No newline at end of file
diff --git a/Code-C/growthrate.c b/Code-C/growthrate.c
deleted file mode 100644
index 2f8d4fc..0000000
--- a/Code-C/growthrate.c
+++ /dev/null
@@ -1,39 +0,0 @@
-#include "average.h"
-#include "getArray.h"
-#include "fileGestion.h"
-#include "initialParameters.h"
-#include "queue.h"
-
-/**
- * @brief realize the growthRate calcul
- * 
- * @param p array with all the values that will be used for the calcul
- * @param powerArray array where results are stocked
- */
-void growthRateCalculation(long **p, double powerArray[]){
-    for(int i = 1; i < nCol; i++){
-        int j = 0;
-        powerArray[i] = 0;
-        while(j < nRow-1){
-            double aire  = ( pow(p[j][i],2) + pow(p[j+1][i],2) ) / 2 * period;
-            powerArray[i] += aire;
-            j++;
-        }
-        powerArray[i] *= invTimeBandWidth;
-    }
-}
-
-/**
- * @brief function that realize all the action to write one lign in the file growthRateData.csv
- * 
- * @param rawDataFileName name of the raw data file to use to realize the calcul
- */
-void growthRate(char* rawDataFileName){
-    long **p = getRawDataArray(rawDataFileName), ;
-    double gRate[nCol -1];
-    if(p !=NULL){
-        growthRateCalculation(p,gRate);
-        appendDataInFile("averageData.csv",aver,nCol-1);
-        freeArray(p,nRow);
-    }
-}
\ No newline at end of file
diff --git a/Code-C/growthrate.h b/Code-C/growthrate.h
deleted file mode 100644
index 107db51..0000000
--- a/Code-C/growthrate.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#include <math.h>
-#include <stdbool.h>
-
-void growthRate(char* rawDataFileName);
\ No newline at end of file
diff --git a/Code-C/main b/Code-C/main
index d66df7a..a762195 100755
Binary files a/Code-C/main and b/Code-C/main differ
diff --git a/Code-C/main.c b/Code-C/main.c
index b8f4190..5d747ef 100644
--- a/Code-C/main.c
+++ b/Code-C/main.c
@@ -29,7 +29,7 @@ void *threadCalculPower(void *vargp){
         while(queueGetNextE(rawDataQueue) != NULL){
             rawDataQueue = queueGetNextE(rawDataQueue);
             fileName = queueGetTabChar(rawDataQueue);
-            powerFunction(fileName);
+            powerFunction(fileName, NULL);
             remove(fileName);
         }
     }
@@ -55,7 +55,7 @@ void *threadCalculBoth(void *vargp){
         while(queueGetNextE(rawDataQueue) != NULL){
             rawDataQueue = queueGetNextE(rawDataQueue);
             fileName = queueGetTabChar(rawDataQueue);
-            powerFunction(fileName);
+            powerFunction(fileName, NULL);
             averageThreadFunction(fileName);
             remove(fileName);
         }
@@ -65,6 +65,9 @@ void *threadCalculBoth(void *vargp){
 void *threadCalculGrowthRate(void * vargp){
     Pqueue rawDataQueue = firstRawDataQueue;
     char* fileName;
+    //double pw[nCol-1];
+    double *dataLign[2][nCol-1];
+    int i = 0;
     while(rawDataWriteFlag){
         //add case first file traitement 
         //(possibility 1: call twice powerfunction , following while strat after 2 file encountered)
@@ -72,8 +75,21 @@ void *threadCalculGrowthRate(void * vargp){
         while(queueGetNextE(rawDataQueue) != NULL){
             rawDataQueue = queueGetNextE(rawDataQueue);
             fileName = queueGetTabChar(rawDataQueue);
-            //double *dataLign = powerFunction(fileName);
-            growthRateFunction(dataLign);
+            if(i < 2){
+                if(i == 1){
+                    powerFunction(fileName, dataLign[1]);
+                    growthRateFunction(**dataLign);
+                }else{
+                    powerFunction(fileName, dataLign[0]);
+                }
+                i++;
+            }else{
+                for(int y = 0; y < (nCol-1); y++){
+                    dataLign[0][y] = dataLign[1][y];
+                }
+                powerFunction(fileName, dataLign[1]);
+                growthRateFunction(**dataLign);
+            }
             remove(fileName);
         }
     }
diff --git a/Code-C/power.c b/Code-C/power.c
index 7e6b1b3..b6ba5d9 100644
--- a/Code-C/power.c
+++ b/Code-C/power.c
@@ -30,13 +30,16 @@ void powerCalculation(long **p, double powerArray[]){
  * @param N number of rows in the file
  * @param M number of columns in the file
  */
-double *powerFunction(char* rawDataFileName){
+void powerFunction(char* rawDataFileName, double **pw){
     long **p = getRawDataArray(rawDataFileName);
-    double pw[nCol-1];
+    double pww[nCol-1];
     if(p !=NULL){
-        powerCalculation(p,pw);
-        appendDataInFile("powerData.csv",pw,nCol-1);
+        if(pw == NULL){
+            powerCalculation(p,pww);
+        }else{
+            powerCalculation(p,*pw);
+        }
+        appendDataInFile("powerData.csv",*pw,nCol-1);
         freeArray(p,nRow);
     }
-    return pw;
 }
\ No newline at end of file
diff --git a/Code-C/power.h b/Code-C/power.h
index a2a134e..043857c 100644
--- a/Code-C/power.h
+++ b/Code-C/power.h
@@ -1,4 +1,4 @@
 #include <math.h>
 #include <stdbool.h>
 
-double *powerFunction(char* rawDataFileName);
\ No newline at end of file
+void powerFunction(char* rawDataFileName, double **pw);
\ No newline at end of file