/in/foo.cc: In function 'int main()':
/in/foo.cc:21:4: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
    while(f[i][l + 1]) l++; f[i][0] = l;
    ^~~~~
/in/foo.cc:21:28: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
    while(f[i][l + 1]) l++; f[i][0] = l;
                            ^