foo.cc: In function ‘int main()’:
foo.cc:6:15: warning: unused variable ‘s2’ [-Wunused-variable]
    6 |         int s,s2,r,r2,g,g2,w,w2,p,p2;//score,rate,guan,west,paper
      |               ^~
foo.cc:6:20: warning: unused variable ‘r2’ [-Wunused-variable]
    6 |         int s,s2,r,r2,g,g2,w,w2,p,p2;//score,rate,guan,west,paper
      |                    ^~
foo.cc:6:25: warning: unused variable ‘g2’ [-Wunused-variable]
    6 |         int s,s2,r,r2,g,g2,w,w2,p,p2;//score,rate,guan,west,paper
      |                         ^~
foo.cc:6:30: warning: unused variable ‘w2’ [-Wunused-variable]
    6 |         int s,s2,r,r2,g,g2,w,w2,p,p2;//score,rate,guan,west,paper
      |                              ^~
foo.cc:6:35: warning: unused variable ‘p2’ [-Wunused-variable]
    6 |         int s,s2,r,r2,g,g2,w,w2,p,p2;//score,rate,guan,west,paper
      |                                   ^~
foo.cc:29:20: warning: ‘cnt’ may be used uninitialized [-Wmaybe-uninitialized]
   29 |                 cnt+=sum;
      |                 ~~~^~~~~
foo.cc:4:28: note: ‘cnt’ was declared here
    4 |         int n,sum=0,temp=0,cnt;
      |                            ^~~
foo.cc:30:15: warning: ‘name2’ may be used uninitialized [-Wmaybe-uninitialized]
   30 |         cout<<name2;
      |               ^~~~~
foo.cc:5:18: note: ‘name2’ was declared here
    5 |         int name,name2;//姓名
      |                  ^~~~~