diff --git a/c/Average_Calculater/README.md b/c/Average_Calculater/README.md
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+# Average_Calculater
+C program which get value from a text file and calculate average and print results in another file.
+
+First compile the c program
+gcc avgThread.c -o avgThread -lpthread
+
+Instructions for run the program
+	add value to dataset.txt as below format
+		n n n n n
+		n n n n n
+		. . . . .
diff --git a/c/Average_Calculater/avgThread.c b/c/Average_Calculater/avgThread.c
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+++ b/c/Average_Calculater/avgThread.c
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+#include <stdio.h>
+#include <pthread.h>
+#include <string.h>
+#include <stdlib.h>
+
+//flag
+pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
+
+void* calAverage(void* arguments);//function for calculate the average
+
+struct calArray
+{
+    int* ArrayInput;
+};
+
+void writeFile(int Size);//function for write values in a file
+
+//global variables
+float *writeAvg;
+int arraySize = 0;
+int count = 0;//for write average
+
+int main(void)//main program
+{
+//Read dataset.txt and take count of rows
+
+    int  d1, d2, d3, d4, d5;//varaibles for store dataset values
+    int rowCount = 0; //variable for count rows
+    
+    FILE *fileRead;
+    fileRead = fopen("dataset.txt", "r");
+    if (fileRead == NULL)//check the file is opend
+    {
+       printf("Error opening source file\n");
+       perror("Error opening dataset.txt");
+       fclose(fileRead);
+    }
+    else
+    {
+       fscanf(fileRead, "%d %d %d %d %d", &d1, &d2, &d3, &d4, &d5);
+       rowCount++;
+       while (!feof(fileRead))
+       {
+          fscanf(fileRead, "%d %d %d %d %d", &d1, &d2, &d3, &d4, &d5);
+          rowCount++;
+       }
+     
+       writeAvg =  calloc(0, sizeof(float));
+       arraySize = rowCount;//assigne value to global variable
+       fclose(fileRead);
+     }
+
+//store data into an array
+
+     int fileArray[rowCount][5];//array for store values
+
+     FILE *fileStore;
+     fileStore = fopen("dataset.txt", "r");
+
+     if(fileStore == NULL)
+     {
+        printf("Error opening sourse file\n");
+        perror("Error opening dataset.txt");
+        fclose(fileStore);
+     }
+     else
+     {
+        for (int c = 0; c < rowCount;c++)
+        {
+           fscanf(fileStore,"%d %d %d %d %d", &fileArray[c][0],&fileArray[c][1] ,&fileArray[c][2], &fileArray[c][3], &fileArray[c][4]); 
+        
+       }
+       fclose(fileStore);
+    }
+
+//print the array
+    printf("\n\n*****Values in dataset.txt*****\n");
+    for (int c = 0; c < rowCount;c++)
+    {
+        printf("\t%d\t%d\t%d\t%d\t%d\n", fileArray[c][0], fileArray[c][1], fileArray[c][2], fileArray[c][3], fileArray[c][4]);
+    }
+
+//assign structure value
+    struct calArray ar1;
+    //ar1.size = 5;
+    ar1.ArrayInput = calloc(0, sizeof(int));
+
+//thread
+    printf("\n\n*****Calculate the average*****\n");
+    pthread_t avgThread[rowCount];
+    //r = row count c = column count
+    for(int r = 0; r < rowCount; r++)
+    {
+        
+        for (int c = 0; c < 5; c++)
+        {
+            ar1.ArrayInput[c] = fileArray[r][c];//assigne value to ArrayInput;
+        }
+        //create thread
+        if(fileArray[r][0] != 0)
+        {
+            count = r;
+            pthread_create(&avgThread[r], NULL, calAverage, &ar1);
+            pthread_join(avgThread[r], NULL);
+        }
+    } 
+
+    pthread_mutex_destroy(&lock);
+ 
+    //call write function
+    printf("\n\n*****Write the results in average.txt*****\n");
+    writeFile(rowCount);
+    return 0;
+}
+//declare functions
+
+void* calAverage(void* arguments)//Average calcuat function
+{
+    pthread_mutex_lock(&lock);
+    struct calArray *ar2 = arguments;
+
+    int sum = 0;//variable for sum
+    float avg = 0;//variable for average
+
+//calculate average
+    for(int i = 0; i <= arraySize; i++)
+        {
+            sum += (ar2 -> ArrayInput[i]);
+        }
+            avg = sum / arraySize;
+
+//print results
+    
+    printf("Row %d --> sum is: %d | average is: %.2f\n",count+1, sum, avg);
+    writeAvg[count] = avg;
+
+    pthread_mutex_unlock(&lock);
+    pthread_exit(0);
+}
+
+
+void writeFile(int Size)//average.txt write function
+{
+    FILE * fileWrite;
+    fileWrite = fopen("average.txt", "w");
+    if(!(fileWrite))
+    {
+       printf("Error opening source file\n");
+       perror("Error opening dataset.txt");
+       fclose(fileWrite);
+    }
+    else
+    {
+        int counter = 0; //variable for while counter
+        while (counter < Size)
+        {
+            fprintf(fileWrite,"%.2f\n", writeAvg[counter]);
+            printf("Result Written :  %.2f\n", writeAvg[counter]);
+
+            counter++;
+            
+        }
+         fclose(fileWrite);
+    }  
+}
diff --git a/c/Average_Calculater/dataset.txt b/c/Average_Calculater/dataset.txt
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+++ b/c/Average_Calculater/dataset.txt
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+1 2 3 4 5
+2 2 2 2 2
+10 20 30 40 50
+12 52 1 20 3
+5 5 5 5 5
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