/in/foo.cc: In function 'int main()':
/in/foo.cc:74:15: warning: 'total' may be used uninitialized [-Wmaybe-uninitialized]
   74 |         cout<<total;
      |               ^~~~~
/in/foo.cc:7:28: note: 'total' was declared here
    7 |         int year,month,day,total;
      |                            ^~~~~
/in/foo.cc:44:30: warning: 'm2' may be used uninitialized [-Wmaybe-uninitialized]
   44 |                         total=day+m1+m2;
      |                         ~~~~~^~~~~~~~~~
/in/foo.cc:9:75: note: 'm2' was declared here
    9 |         int m1=31,m3=31,m5=31,m7=31,m8=31,m10=31,m4=30,m6=30,m9=30,m11=30,m2;
      |                                                                           ^~