# include
void main()
{
/* 说明本文件将要使用其它文件中的函数 */
extern int multiply();
extern int sum();
int a, b;
int result;
printf("Please input a and b: ");
scanf("%d, %d", &a, &
# include
void main()
{
/* 说明本文件将要使用其它文件中的函数 */
extern int multiply();
extern int sum();
int a, b;
int result;
printf("Please input a and b: ");
scanf("%d, %d", &a, &
/* extern.h - The collection of external definitions needed. */
/* This file is part of GDBM, the GNU data base manager, by Philip A. Nelson.
Copyright (C) 1990, 1991, 1993 Free Software Fou
# include
void main()
{
/* 说明本文件将要使用其它文件中的函数 */
extern int multiply();
extern int sum();
int a, b;
int result;
printf("Please input a and b: ");
scanf("%d, %d", &a, &
