check mallocs

main.c

@@ -39,9 +39,18 @@ int main(int argc, char const *argv[])
     }
     height = height/10;
 
+    /* initialisation de la matrice */
     matrix = (char **) malloc(height*sizeof(char *));
+    if (matrix == NULL) {
+        printf("Error malloc");
+        exit(1);
+    }
     for (i=0 ; i<height ; i++) {
         matrix[i] = (char *) malloc(width*sizeof(char));
+        if (matrix[i] == NULL) {
+            printf("Error malloc");
+            exit(1);
+        }
     }
 
     i = 0;