/in/foo.cc: In function 'int main()':
/in/foo.cc:7:1: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
 for(int i = 0;i < m;i++)
 ^~~
/in/foo.cc:9:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
     for (unsigned int i = 0;i < m;i++) {
     ^~~
/in/foo.cc:9:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (unsigned int i = 0;i < m;i++) {
                             ~~^~~