/in/foo.cc: In function 'int main()':
/in/foo.cc:56:18: error: expected primary-expression before 'int'
  nc=InterSet( a1,int n1,int c[]);
                  ^~~
/in/foo.cc:56:25: error: expected primary-expression before 'int'
  nc=InterSet( a1,int n1,int c[]);
                         ^~~
/in/foo.cc:57:18: error: expected primary-expression before 'int'
  nc=InterSet( a2,int n2,int c[]);
                  ^~~
/in/foo.cc:57:25: error: expected primary-expression before 'int'
  nc=InterSet( a2,int n2,int c[]);
                         ^~~
/in/foo.cc:58:18: error: expected primary-expression before 'int'
  nc=InterSet( a3,int n3,int c[]);
                  ^~~
/in/foo.cc:58:25: error: expected primary-expression before 'int'
  nc=InterSet( a3,int n3,int c[]);
                         ^~~