foo.cc: In function 'int main()':
foo.cc:7:14: warning: unused variable 'p' [-Wunused-variable]
  int a,i,j,t,p,sum=0,count=0;
              ^
foo.cc:7:16: warning: unused variable 'sum' [-Wunused-variable]
  int a,i,j,t,p,sum=0,count=0;
                ^~~
foo.cc:7:22: warning: unused variable 'count' [-Wunused-variable]
  int a,i,j,t,p,sum=0,count=0;
                      ^~~~~

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