/in/foo.c: In function 'main':
/in/foo.c:9:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   for(b=2;b<a;b++)
   ^~~
/in/foo.c:12:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
    if(b>=a)
    ^~