/in/foo.c: In function 'main':
/in/foo.c:10:11: warning: right-hand operand of comma expression has no effect [-Wunused-value]
   for(x1=2,x1<x;x1++;)
           ^
/in/foo.c:10:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   for(x1=2,x1<x;x1++;)
   ^~~
/in/foo.c:13:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
    if(x1!=x)
    ^~
/in/foo.c:18:2: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
  else
  ^~~~
/in/foo.c:20:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else'
   return 0;
   ^~~~~~