/in/foo.c: In function 'main':
/in/foo.c:19:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if(n>=3)
  ^~
/in/foo.c:22:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   if(p%2==1)
   ^~
/in/foo.c: In function 'search1':
/in/foo.c:42:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
/in/foo.c: In function 'search2':
/in/foo.c:49:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^