foo.cc: In function 'int main()':
foo.cc:10:35: warning: variable 'n3' set but not used [-Wunused-but-set-variable]
  int s[100],s0[100],s1[100],n1,n2,n3,i;
                                   ^~
foo.cc:10:38: warning: unused variable 'i' [-Wunused-variable]
  int s[100],s0[100],s1[100],n1,n2,n3,i;
                                      ^
foo.cc: In function 'int bingS(int*, int, int*, int, int*)':
foo.cc:74:1: warning: no return statement in function returning non-void [-Wreturn-type]
 } 
 ^

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