/in/foo.cc: In function 'int main()':
/in/foo.cc:8:11: warning: unused variable 'j' [-Wunused-variable]
     int i,j,k,sum=0,count=0,max;
           ^
/in/foo.cc:8:15: warning: unused variable 'sum' [-Wunused-variable]
     int i,j,k,sum=0,count=0,max;
               ^~~
/in/foo.cc:8:21: warning: unused variable 'count' [-Wunused-variable]
     int i,j,k,sum=0,count=0,max;
                     ^~~~~