/in/foo.c: In function 'main':
/in/foo.c:8:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(n=1;n<=m;n++);
  ^~~
/in/foo.c:9:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  {for(b=1;b<=n;b++);
  ^
/in/foo.c:9:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  {for(b=1;b<=n;b++);
   ^~~
/in/foo.c:10:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   {v*=b;}
   ^
/in/foo.c:10:5: warning: 'v' may be used uninitialized in this function [-Wmaybe-uninitialized]
   {v*=b;}
    ~^~~