/in/lab5.c: In function 'pop':
/in/lab5.c:25:18: warning: format '%c' expects argument of type 'int', but argument 2 has type 'char *' [-Wformat=]
         printf("%c","overflow");
                 ~^  ~~~~~~~~~~
                 %s
/in/lab5.c: In function 'popd':
/in/lab5.c:39:18: warning: format '%c' expects argument of type 'int', but argument 2 has type 'char *' [-Wformat=]
         printf("%c","overflow");
                 ~^  ~~~~~~~~~~
                 %s
/in/lab5.c: In function 'main':
/in/lab5.c:70:14: warning: format '%c' expects argument of type 'int', but argument 2 has type 'char *' [-Wformat=]
     printf("%c test1\n",infix); //test1
             ~^          ~~~~~
             %s
/in/lab5.c: In function 'prece':
/in/lab5.c:58:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^