/in/foo.c: In function 'addSmallest3':
/in/foo.c:33:5: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
   if(p->state == 0)
     ^
/in/foo.c: At top level:
/in/foo.c:62:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main()
 ^~~~