/in/foo.cc: In function 'int main()':
/in/foo.cc:6:6: warning: variable 'c' set but not used [-Wunused-but-set-variable]
  int c[4][2],d[4][2],e[5][5]={0},i,j;
      ^
/in/foo.cc:6:14: warning: variable 'd' set but not used [-Wunused-but-set-variable]
  int c[4][2],d[4][2],e[5][5]={0},i,j;
              ^