foo.cc: In function 'int aaa(int*, int, int*, int, int*)':
foo.cc:69:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j,n3=0;
        ^
foo.cc: In function 'int bbb(int*, int, int*, int, int*)':
foo.cc:85:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j,n3=0;
        ^
foo.cc: In function 'int ccc(int*, int, int*, int, int*)':
foo.cc:101:19: warning: unused variable 'j' [-Wunused-variable]
  int n3=0,n4,n5,i,j;
                   ^

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