foo.cc: In function ‘int main()’:
foo.cc:46:24: warning: ‘m1’ may be used uninitialized [-Wmaybe-uninitialized]
   46 |         cout<<m2<<" "<<m1<<endl;
      |                        ^~
foo.cc:5:19: note: ‘m1’ was declared here
    5 |         int a,b,c,m1,m2;
      |                   ^~
foo.cc:46:19: warning: ‘m2’ may be used uninitialized [-Wmaybe-uninitialized]
   46 |         cout<<m2<<" "<<m1<<endl;
      |                   ^~~
foo.cc:5:22: note: ‘m2’ was declared here
    5 |         int a,b,c,m1,m2;
      |                      ^~