/in/foo.cc: In function 'int main()':
/in/foo.cc:8:27: error: a function-definition is not allowed here before '{' token
    8 |         int T(int m,int d){
      |                           ^
/in/foo.cc:16:21: warning: left operand of comma operator has no effect [-Wunused-value]
   16 |         int total1=(m1,d1);
      |                     ^~
/in/foo.cc:17:21: warning: left operand of comma operator has no effect [-Wunused-value]
   17 |         int total2=(m2,d2);
      |                     ^~
/in/foo.cc:6:13: warning: unused variable 'a' [-Wunused-variable]
    6 |         int a[12]={31,28,31,30,31,30,31,31,30,31,30,31};
      |             ^