fix errors. Remaining errors:

- segfault when empty command
- doesn't wait for the end of the command before prompting

include/include.h

@@ -6,7 +6,7 @@
 /*   By: mcolonna <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/04/23 14:15:12 by mcolonna          #+#    #+#             */
-/*   Updated: 2024/04/25 17:47:02 by mcolonna         ###   ########.fr       */
+/*   Updated: 2024/04/25 18:04:46 by mcolonna         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -38,7 +38,7 @@ typedef struct s_call
 {
 	const char			*program; // path of the program to call.
 	int					argc; // number of arguments given
-	const char *const	*argv; // arguments given
+	char *const			*argv; // arguments given
 	// (argc and argv must include the program name)
 }						t_call;
 
@@ -58,7 +58,7 @@ t_command	parse_command(const t_memclass mc, const char *command);
 ///// EXECUTE COMMAND /////
 
 // Execute the command given. Return the exit status.
-int			execute_command(t_command command);
+int			execute_command(t_memclass mc, t_command command, char *const envp[]);
 
 ///// ERROR /////
 
@@ -73,6 +73,11 @@ void		fatal_error(const char *msg);
 
 // Get the PATH values.
 // Return a list of strings ended by NULL.
-char		**get_path(const char **envp);
+char		**get_path(char *const envp[]);
+
+// Search the program in PATH.
+// Returns the path of the program to use, or NULL if there is none.
+const char	*search_path(
+		const t_memclass mc, const char **path, const char *prog);
 
 #endif