eg

AcquiringLand/Fundamentals/bad_practice.c

@@ -3,7 +3,15 @@
 
 int *division(int input, int by)
 {
-    int value = input / by;
+    
+    //int value = input / by;
+    if (by != 0){
+        //int value = input / by;
+    }
+    else
+        return 
+
+        //int value = 0;
     int *ptr = &value;
     return ptr;
 }

AcquiringLand/Fundamentals/insert_string.c

@@ -5,22 +5,21 @@ char **insert_string(char **strings_array, int *array_size, char *insert_str, in
 
     
     char **rslt = malloc((*array_size + 1 )* sizeof(char *));
+    if(rslt == NULL) return NULL;
 
     int index_clc = 0;
+    int index_clc2 = 0;
     //char *temp;
 
-    while (index_clc < *array_size){
+    while (index_clc < *array_size + 1){
 
         
-        if (index_clc == index){
-            *(rslt + index_clc) = insert_str;
-            index_clc ++;
-        }
+        if (index_clc == index) *(rslt + index_clc) = insert_str;
         else{
-            *(rslt + index_clc) = *(strings_array + index_clc);
+            *(rslt + index_clc) = *(strings_array + index_clc2);
+            index_clc2 ++;
 	}
 
-
         /*
         if (index_clc >= index){
             temp = *(strings_array + index_clc);
@@ -33,20 +32,23 @@ char **insert_string(char **strings_array, int *array_size, char *insert_str, in
     //*(strings_array + index) = insert_str;
     
     //free(temp);
+    *array_size = *array_size + 1; 
     return rslt;
 }
-
+/*
 int main(){
     char *tests[] = {"This", "is", "a", "long", "example"};
     char *ins = "very";
     int ted = 5;
     
     char **rslt = insert_string(tests, &ted, ins ,3);
-    int index = 0;
-    while (index < 6){
-        printf("%s", *(rslt + index));
-        index ++;
+    
+    if(rslt != NULL){
+	
+	for (int i = 0; i < ted; i ++) printf("%s",rslt[i]);
     }
+    printf("\n");
+    
     free (rslt);
 }
-
+*/

AcquiringLand/Fundamentals/itoa.c

@@ -23,6 +23,7 @@ char *my_itoa(int value){
     int taille = get_number_length(value);
 
     char *rslt = malloc(taille + 1 * sizeof(char));
+    if (rslt == NULL) return NULL;
 
     if (value < 0){
         value = value * -1;
@@ -46,7 +47,7 @@ char *my_itoa(int value){
 
     return rslt;
 }
-
+/*
 int main(){
     printf("TESTS 1 \n"); 
     printf("%i\n", get_number_length(7));       //1
@@ -66,4 +67,4 @@ int main(){
     printf("%s\n", rslt);
     free(rslt);
 
-}
+}*/

AcquiringLand/Fundamentals/join_strings.c

@@ -0,0 +1,57 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+char *join_strings(char *strings[], int count){
+    
+    if (strings == NULL) return NULL;
+
+    int tot = 0;
+    int index = 0;
+    //connaitre taille des str dans strings
+    for (int i = 0; i < count; i++){
+    
+        index = 0;
+        //binf
+        while (strings[i][index]){
+            tot ++;
+            index ++;
+            //printf("boucle inf ici");
+        }
+         
+    }
+
+    char *rslt = malloc((tot + count) * sizeof(char));
+    if (rslt == NULL) return NULL;
+
+    tot = 0;
+
+    for (int i = 0; i < count; i ++){
+        index = 0;
+        //binf
+        while (strings[i][index]){
+            
+            *(rslt + tot) = strings[i][index];
+            index ++;
+            tot ++;    
+        }
+        if (i == count - 1)
+            *(rslt + tot) = '\0';
+        else *(rslt + tot) = ' ';
+        tot ++;
+    }
+    //free(strings);
+    return rslt;
+}
+/*
+int main(){
+    
+    char *str[] = {"Hello", "from ", "Java", "swimming pool"};
+    char *test = join_strings(str, 4);
+    printf("%s\n", test);
+    free (test);
+
+    test = join_strings(NULL, 0);
+    printf("%s\n", test);
+    free(test);
+
+}*/

AcquiringLand/Fundamentals/leaks.c

@@ -3,12 +3,13 @@
 
 int **allocate_matrix(int rows, int cols)
 {
-    int **matrix = malloc(rows * sizeof(int *));
+    int **matrix = malloc(rows * sizeof(int *));//creation du tableau X hauteur
     if (!matrix)
         return NULL;
     for (int i = 0; i < rows; i++)
     {
-        matrix[i] = malloc(cols * sizeof(int));
+        matrix[i] = malloc(cols * sizeof(int));//creation des colonnes
+        //on free les cols si la matrice n'existe pas
         if (!matrix[i])
         {
             for (int j = 0; j < i; j++)
@@ -24,6 +25,9 @@ void free_matrix(int **matrix, int rows)
 {
     if (!matrix)
         return;
+    //ajout
+    for (int j = 0; j < rows; j ++)
+        free(matrix[j]);
     free(matrix);
     return;
 }
@@ -47,5 +51,6 @@ int main(void)
     }
 
     free_matrix(matrix, rows);
+    //free(matrix);
     return EXIT_SUCCESS;
 }

AcquiringLand/Fundamentals/magic_arrays.c

@@ -0,0 +1,49 @@
+#include <stdlib.h>
+//#include <stdio.h>
+int *compress_array(const int *input, int n, int *out_size){
+
+    if (input == NULL) return NULL;
+    
+    int taille = 1;
+    for (int i = 0; i < n -1; i++) if(input[i] != input[i + 1]) taille ++;
+
+    *out_size = taille * 2;
+   
+
+    int *rslt = malloc(*out_size * sizeof(int));
+    if (rslt == NULL) return NULL;
+
+
+    int index_rslt = 0;
+    int index = 0;
+    while(index < n){
+
+        int ch_cons = 0;
+        int chiffre = input[index];
+
+        while (index < n && input[index] == chiffre){
+            ch_cons ++;
+            index ++;
+        }
+
+        rslt[index_rslt ++] = chiffre;
+        rslt[index_rslt ++] = ch_cons;
+
+    }
+
+    return rslt;
+    
+}
+/*
+int main(){
+
+        int test[] = {3, 3, 3, 1, 1, 5, 5, 5, 5};
+        int sortie = 6;
+        int *rs = compress_array(test, 9, &sortie);
+
+        for(int i = 0; i < sortie; i++){
+            printf("%i;", rs[i]);
+        }
+        free(rs);
+
+}*/

AcquiringLand/Fundamentals/trespass.c

@@ -51,6 +51,7 @@ int main(void)
     {
         return EXIT_FAILURE;
     }
+    printf("%s",res1);
     puts(res1);
     free(res1);
     return EXIT_SUCCESS;