/* ECP: FILEname=fig9_20.c */
/* 1*/       /* Header File With Incomplete struct Declaration  */
/* 2*/   typedef struct Complex *Complex;

/* 3*/   Complex InitComplex( double Real, double Imag );
/* 4*/   void AddComplex( const Complex A, const Complex B, Complex Sum );
/* 5*/   void PrintComplex( const Complex A );