/in/foo.cc: In function 'int main()':
/in/foo.cc:53:18: error: expected primary-expression before 'int'
  nc=InterSet( a1,int n1,int c[]);
                  ^~~
/in/foo.cc:53:25: error: expected primary-expression before 'int'
  nc=InterSet( a1,int n1,int c[]);
                         ^~~
/in/foo.cc:54:18: error: expected primary-expression before 'int'
  nc=InterSet( a2,int n2,int c[]);
                  ^~~
/in/foo.cc:54:25: error: expected primary-expression before 'int'
  nc=InterSet( a2,int n2,int c[]);
                         ^~~
/in/foo.cc:55:18: error: expected primary-expression before 'int'
  nc=InterSet( a3,int n3,int c[]);
                  ^~~
/in/foo.cc:55:25: error: expected primary-expression before 'int'
  nc=InterSet( a3,int n3,int c[]);
                         ^~~