diff --git a/gmon.out b/gmon.out
new file mode 100644
index 0000000..0cd2ed8
Binary files /dev/null and b/gmon.out differ
diff --git a/student_rank b/student_rank
new file mode 100755
index 0000000..b306940
Binary files /dev/null and b/student_rank differ
diff --git a/student_rank.c b/student_rank.c
index af84003..5e68bfa 100644
--- a/student_rank.c
+++ b/student_rank.c
@@ -6,120 +6,118 @@
 #include "heapsort.h"
 #include "bubblesort.h"
 
-void generate_grades(int** students_array, int students_number, int grades_number)
+void generate_grades(int **students_array, int students_number, int grades_number)
 {
     int i = 0;
-    for(i=0;i<students_number;i++)
+    for (i = 0; i < students_number; i++)
     {
-	students_array[i] = (int*) malloc(grades_number*sizeof(int));
-        generate_array(students_array[i],grades_number);
+        students_array[i] = (int *)malloc(grades_number * sizeof(int));
+        generate_array(students_array[i], grades_number);
     }
 }
 
-void generate_ranks(int** students_array, int students_number, int grades_number)
+void generate_ranks(int **students_array, int students_number, int grades_number)
 {
     int i = 0;
     int j = 0;
-    for(i=0;i<students_number;i++)
+    for (i = 0; i < students_number; i++)
     {
-	students_array[i] = (int*) malloc(grades_number*sizeof(int));
-        for(j=0;j<grades_number;j++)
-	{
+        students_array[i] = (int *)malloc(grades_number * sizeof(int));
+        for (j = 0; j < grades_number; j++)
+        {
             students_array[i][j] = -1;
-	}
+        }
     }
 }
 
-void free_array(int** students_array, int students_number)
+void free_array(int **students_array, int students_number)
 {
     int i = 0;
-    for(i=0;i<students_number;i++)
+    for (i = 0; i < students_number; i++)
     {
         free(students_array[i]);
     }
 }
 
-void print_student_array(int** students_array, int students_number, int grades_number)
+void print_student_array(int **students_array, int students_number, int grades_number)
 {
     int i = 0;
     printf("----------------------\n");
-    for(i=0;i<students_number;i++)
+    for (i = 0; i < students_number; i++)
     {
-	printf("Student %d : ",i);
-        print_array(students_array[i],grades_number);
+        printf("Student %d : ", i);
+        print_array(students_array[i], grades_number);
     }
     printf("----------------------\n");
 }
 
-int find_rank_student(int student_grade, int* grades_array, int students_number)
+int find_rank_student(int student_grade, int *grades_array, int students_number)
 {
     int position = -1;
     int i = 0;
-    bubblesort(grades_array,students_number);
-    for(i = students_number-1; i >= 0; i--)
+    for (i = students_number - 1; i >= 0; i--)
     {
-        if(grades_array[i] == student_grade)
-	{
-            position = students_number-i;
-	    break;
-	}
+        if (grades_array[i] == student_grade)
+        {
+            position = students_number - i;
+            break;
+        }
     }
     return position;
 }
 
-void sort_students(int** students_rank, int** students_array, int students_number, int grades_number)
+void sort_students(int **students_rank, int **students_array, int students_number, int grades_number)
 {
     int i = 0, j = 0;
-    for(i = 0; i < grades_number; i++)
+    for (i = 0; i < grades_number; i++)
     {
-        int * grades = (int*) malloc(students_number*sizeof(int));
-	for(j = 0; j < students_number; j++)
-	{
-	    grades[j] = students_array[j][i];
-	}
-        bubblesort(grades,students_number);
-	for(j = 0; j < students_number; j++)
-	{
-            students_rank[j][i] = find_rank_student(students_array[j][i],grades,students_number);
-	}
-	free(grades);
+        int *grades = (int *)malloc(students_number * sizeof(int));
+        for (j = 0; j < students_number; j++)
+        {
+            grades[j] = students_array[j][i];
+        }
+        bubblesort(grades, students_number);
+        for (j = 0; j < students_number; j++)
+        {
+            students_rank[j][i] = find_rank_student(students_array[j][i], grades, students_number);
+        }
+        free(grades);
     }
 }
 
-int main(int argc, char** argv)
+int main(int argc, char **argv)
 {
-    int** student_grades = NULL;
-    int** student_ranks = NULL;
+    int **student_grades = NULL;
+    int **student_ranks = NULL;
     int students_length = 0;
     int grades_length = 0;
     int debug_mode = 0;
-    
-    if(argc != 4)
+
+    if (argc != 4)
     {
-        printf("Usage : %s <number of student> <number of grade per student> <debug mode : 0|1>\n",argv[0]);
+        printf("Usage : %s <number of student> <number of grade per student> <debug mode : 0|1>\n", argv[0]);
         return -1;
     }
     students_length = atoi(argv[1]);
     grades_length = atoi(argv[2]);
     debug_mode = atoi(argv[3]);
 
-    student_grades = (int**) malloc(students_length*sizeof(int*));
-    student_ranks = (int**) malloc(students_length*sizeof(int*));
-    generate_grades(student_grades,students_length,grades_length);
-    generate_ranks(student_ranks,students_length,grades_length);
-    
-    sort_students(student_ranks,student_grades,students_length,grades_length);
-    
-    if(debug_mode)
+    student_grades = (int **)malloc(students_length * sizeof(int *));
+    student_ranks = (int **)malloc(students_length * sizeof(int *));
+    generate_grades(student_grades, students_length, grades_length);
+    generate_ranks(student_ranks, students_length, grades_length);
+
+    sort_students(student_ranks, student_grades, students_length, grades_length);
+
+    if (debug_mode)
     {
-        print_student_array(student_grades,students_length,grades_length);
-        print_student_array(student_ranks,students_length,grades_length);
+        print_student_array(student_grades, students_length, grades_length);
+        print_student_array(student_ranks, students_length, grades_length);
     }
 
-    free_array(student_grades,students_length);
-    free_array(student_ranks,students_length);
+    free_array(student_grades, students_length);
+    free_array(student_ranks, students_length);
     free(student_grades);
     free(student_ranks);
     return 0;
 }
-