Thanatermesis

compiling:launchers.c: In function 'edje_cb_button06':launchers.c:114: warning: incompatible implicit declaration of built-in function 'printf'-----------source:voidedje_cb_button06(void *data, Evas_Object *obj,                    const char *emission, const char *source){   Ecore_Exe* exe;   exe = ecore_exe_run("echo gksudo synaptic", NULL);   if (!exe)           printf("error while exec command synaptic\n");}