/in/foo.cc: In function 'int main()':
/in/foo.cc:19:4: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    for (i = 1; i <= s-1; i++)
    ^~~
/in/foo.cc:21:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
     return 0;
     ^~~~~~
/in/foo.cc:6:10: warning: unused variable 'j' [-Wunused-variable]
  int  i, j, k = 0, m, s;
          ^
/in/foo.cc:7:8: warning: unused variable 'n' [-Wunused-variable]
  float n;
        ^
/in/foo.cc:24:13: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if (m >= k-s) {
            ~^~