从书中写出程序 [英] writing program from a book

问题描述

我从一本书中编写了那个程序，我在C ++编译器下正确地编译了这个程序

但是我在unix下编译了这些错误

!!


错误 -

--------

part10_iti_r01_ch10_verbo_menu_driven_programs.c：函数`main''：

part10_iti_r01_ch10_verbo_menu_driven_programs.c：6：警告：

声明`argc''阴影参数

part10_iti_r01_ch10_verbo_menu_driven_programs.c：7：警告：

声明'argv''遮蔽参数

part10_iti_r01_ch10_verbo_menu_driven_programs.c：2 2：语法错误

'''''令牌

计划 -

--------

#include< stdio.h>

// part10_iti_r01_ch10_verbo_menu_driven_programs .c


main（argc，argv）

{

int argc;

char * argv [50];

{

int option;

do

{

// Dis播放菜单

display_menu（）;


//启动适当的程序或退出

if（option！= 7）//退出

call_program（选项，argv）;

}

while（选项！= 7）;

}

display_menu（）

{

system（" clear"）;

printf（" \ n电视租赁系统"）;

printf（" \\\
----------------"）;

printf（\ n \ n 1设置新客户）;

printf（\ n \ n 2更改现有客户记录）;

printf（" \ n \ n 3添加新客户记录）;

printf（" \ n\ n 4删除客户记录）;

printf（" \ n\ n 5打印客户账单）;

printf（" \ n \ n 6显示客户记录）;

printf（" \ n \ n 7 Exit"）;

}

user_selection（）

{

int opt;

printf（" \\\
\ n输入所需的选项编号（1-7）"）;

scanf（"％d"，& opt）;

返回（opt）;

}


call_program（opt，argv）

int opt;

char * argv [];

{

开关（opt）

{

case 1：spawnvp（0，" a.obj"，argv）;

delay（）;

break;


默认值：printf（" \ nError"）;

delay（）;

}

}

delay（）

{

int i;

for（i = 0; i< = 20000; ++ i）;

}

I wrote that program from a book that my compile that program
correctly under C++ compiler but I got those errors for compiling
under unix !!

Errors-
--------
part10_iti_r01_ch10_verbo_menu_driven_programs.c: In function `main'':
part10_iti_r01_ch10_verbo_menu_driven_programs.c:6 : warning:
declaration of `argc'' shadows a parameter
part10_iti_r01_ch10_verbo_menu_driven_programs.c:7 : warning:
declaration of `argv'' shadows a parameter
part10_iti_r01_ch10_verbo_menu_driven_programs.c:2 2: syntax error
before ''{'' token

Program-
--------
#include <stdio.h>
//part10_iti_r01_ch10_verbo_menu_driven_programs.c

main (argc,argv)
{
int argc;
char *argv[50];
{
int option;
do
{
//Display menu
display_menu();

//Initite appropriate program or exit
if (option!=7) //exit
call_program(option,argv);
}
while (option!=7);
}
display_menu()
{
system("clear");
printf ("\n TV Rental system");
printf ("\n ----------------");
printf("\n\n 1 Set up new customer");
printf("\n\n 2 Change existing customer record");
printf("\n\n 3 Add new customer record");
printf("\n\n 4 Delete customer record");
printf("\n\n 5 Print customer bills");
printf("\n\n 6 display a customer record");
printf("\n\n 7 Exit");
}
user_selection()
{
int opt;
printf("\n\n Enter required option number (1-7) ");
scanf("%d",&opt);
return(opt);
}

call_program(opt,argv)
int opt;
char *argv[];
{
switch(opt)
{
case 1: spawnvp(0,"a.obj",argv);
delay();
break;

default:printf("\nError");
delay();
}
}
delay()
{
int i;
for (i=0;i<=20000;++i);
}

推荐答案

" hp ****** @ yahoo.com" ; <诶*********** @ yahoo.com>在留言中写道

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news:7e**************************@posting.google.c om...

我从一本书中编写了该程序，我在C ++编译器下正确地编译了该程序，但是我在unix下编译了这些错误!!
错误 -
--------
part10_iti_r01_ch10_verbo_menu_driven_programs.c：在函数`main''：
part10_iti_r01_ch10_verbo_menu_driven_programs.c：6：警告：
`argc的声明''阴影参数
part10_iti_r01_ch10_verbo_menu_driven_programs.c：7：警告：
'argv''声明阴影参数
part10_iti_r01_ch10_verbo_menu_driven_programs.c：2 2：语法错误
之前'' {''令牌

程序 -
--------
#include< stdio.h>
file：//part10_iti_r01_ch10_verbo_menu_driven_programs.c

main（argc，argv）
{argc;
char * argv [50];
{


这是什么语言？我无法想象这会在C ++下编译

或C.我认为您正在尝试使用旧式函数声明

类型：


foo（p1，p1）

int p1;

int p2;

{


...

}


您应该将这些更改为较新的样式函数声明：

int foo（int p1，int p2）

{

...

}

所以这将成为：


int main（int argc，char ** argv）

{

int option;

....


}

int选项;
做
{
文件：//显示菜单
display_menu（）;

file：//初始化相应的程序或退出
如果（选项！= 7）file：// exit
call_program（option，argv）;
}
while（选项！= 7）;
}
display_menu（）
{
system（clear ;）;
printf（" \ n TV Rental sy stem（）;
printf（" \\\
----------------"）;
printf（" \\\
\ n 1设置新客户）;
printf（\ n \ nn 2更改现有客户记录）;
printf（" \ n \ n 3添加新客户记录） ;
printf（" \ n \ n 4删除客户记录）;
printf（" \ n \ n 5打印客户账单"）;
printf（" ; \ n \ n显示客户记录）;
printf（" \ n \ n 7 Exit"）;
}

user_selection（）
{
int opt;
printf（" \\\
\ n输入所需的选项编号（1-7）"）;
scanf（"％d" ，& opt）;
返回（选择）;
}

call_program（opt，argv）
int opt;
char * argv [] ;
{
切换（选择）
{
案例1：spawnvp（0，" a.obj"，argv）;
延迟（）;
break;

默认值：printf（&quo t; \ nnError"）;
延迟（）;
}
}

延迟（）
{
int i;
for（i = 0; i< = 20000; ++ i）;
}

I wrote that program from a book that my compile that program
correctly under C++ compiler but I got those errors for compiling
under unix !!

Errors-
--------
part10_iti_r01_ch10_verbo_menu_driven_programs.c: In function `main'':
part10_iti_r01_ch10_verbo_menu_driven_programs.c:6 : warning:
declaration of `argc'' shadows a parameter
part10_iti_r01_ch10_verbo_menu_driven_programs.c:7 : warning:
declaration of `argv'' shadows a parameter
part10_iti_r01_ch10_verbo_menu_driven_programs.c:2 2: syntax error
before ''{'' token

Program-
--------
#include <stdio.h>
file://part10_iti_r01_ch10_verbo_menu_driven_programs.c

main (argc,argv)
{
int argc;
char *argv[50];
{
What language is this?? I can''t imagine that this would compile under C++
or C. I think that you are trying to use old style function declarations
of the type:

foo(p1,p1)
int p1;
int p2;
{

...
}

You should change these to the newer style function declarations:

int foo(int p1,int p2)
{
...
}
So this would become:

int main(int argc, char ** argv)
{
int option;
....

}
int option;
do
{
file://Display menu
display_menu();

file://Initite appropriate program or exit
if (option!=7) file://exit
call_program(option,argv);
}
while (option!=7);
}
display_menu()
{
system("clear");
printf ("\n TV Rental system");
printf ("\n ----------------");
printf("\n\n 1 Set up new customer");
printf("\n\n 2 Change existing customer record");
printf("\n\n 3 Add new customer record");
printf("\n\n 4 Delete customer record");
printf("\n\n 5 Print customer bills");
printf("\n\n 6 display a customer record");
printf("\n\n 7 Exit");
}
user_selection()
{
int opt;
printf("\n\n Enter required option number (1-7) ");
scanf("%d",&opt);
return(opt);
}

call_program(opt,argv)
int opt;
char *argv[];
{
switch(opt)
{
case 1: spawnvp(0,"a.obj",argv);
delay();
break;

default:printf("\nError");
delay();
}
}
delay()
{
int i;
for (i=0;i<=20000;++i);
}

call_program相同：


int call_program（int opt，char ** argv）

{

...

}


Sean

Same for call_program:

int call_program(int opt,char ** argv)
{
...
}

Sean

eh *********** @ yahoo.com （hp******@yahoo.com）写道：

eh***********@yahoo.com (hp******@yahoo.com) writes:

我从一本书中编写了该程序，我在C ++编译器下正确地编译了该程序，但我在unix下编译了这些错误！

错误 -
--------
part10_iti_r01_ch10_verbo_menu_driven_programs.c：在函数main中：
part10_iti_r01_ch10_verbo_menu_driven_programs.c：6：警告：
声明`argc''阴影a参数
part10_iti_r01_ch10_verbo_menu_driven_programs.c：7：警告：
'ar'的声明gv''阴影参数
part10_iti_r01_ch10_verbo_menu_driven_programs.c：2 2：语法错误
在''''令牌之前

程序 -
------ -
#include< stdio.h>
//part10_iti_r01_ch10_verbo_menu_driven_programs.c

main（argc，argv）
{


摆脱那个支撑......

int argc;
char * argv [50];


....并放弃旧的K& R风格。

{
int选项;
做
{
//显示菜单
display_menu（）;

//启动适当的程序或退出
如果（选项！= 7）//退出
call_program（option，argv）;
}
while（选项！= 7）;
}
display_menu（）
{
system（clear ;）;
printf（" \ n TV Rental system"）;
printf（" \\\
----------------"） ;
printf（" \ n \ n 1设置新客户）;
printf（" \ n \ n 2更改现有客户记录）;
printf （\ n \ n 3添加新客户记录）;
printf（" \ n \ n 4删除客户记录）;
printf（" \ nn \\ n \\ n \\ n打印客户账单）;
printf（\ n \ nn 6显示客户记录）;
printf（" \ nn \ n 7 Exit"）;
}

user_selection（）
{
int opt;
printf（" \ n \ n输入所需的选项编号（1-7）"）;
scanf（" ％d"& opt）;
返回（选择）;
}

call_program（opt，argv）
int opt;
char * argv [];
{
switch（opt）
{
案例1：spawnvp（0，" a.obj"，argv）;


spawnvp做什么用？

延迟（）;
休息;

默认值：printf（" \\ \\ n \\ n \\ n错误"）;
延迟（）;
}


延迟（）
{
int i;
for（i = 0; i< = 20000; ++ i）;
}

I wrote that program from a book that my compile that program
correctly under C++ compiler but I got those errors for compiling
under unix !!

Errors-
--------
part10_iti_r01_ch10_verbo_menu_driven_programs.c: In function `main'':
part10_iti_r01_ch10_verbo_menu_driven_programs.c:6 : warning:
declaration of `argc'' shadows a parameter
part10_iti_r01_ch10_verbo_menu_driven_programs.c:7 : warning:
declaration of `argv'' shadows a parameter
part10_iti_r01_ch10_verbo_menu_driven_programs.c:2 2: syntax error
before ''{'' token

Program-
--------
#include <stdio.h>
//part10_iti_r01_ch10_verbo_menu_driven_programs.c

main (argc,argv)
{
Get rid of that brace...
int argc;
char *argv[50];
.... and drop the old K&R style.
{
int option;
do
{
//Display menu
display_menu();

//Initite appropriate program or exit
if (option!=7) //exit
call_program(option,argv);
}
while (option!=7);
}
display_menu()
{
system("clear");
printf ("\n TV Rental system");
printf ("\n ----------------");
printf("\n\n 1 Set up new customer");
printf("\n\n 2 Change existing customer record");
printf("\n\n 3 Add new customer record");
printf("\n\n 4 Delete customer record");
printf("\n\n 5 Print customer bills");
printf("\n\n 6 display a customer record");
printf("\n\n 7 Exit");
}

user_selection()
{
int opt;
printf("\n\n Enter required option number (1-7) ");
scanf("%d",&opt);
return(opt);
}

call_program(opt,argv)
int opt;
char *argv[];
{
switch(opt)
{
case 1: spawnvp(0,"a.obj",argv);
What does spawnvp do?
delay();
break;

default:printf("\nError");
delay();
}
}

delay()
{
int i;
for (i=0;i<=20000;++i);
}

这有多古老。那个循环没有时间在这里运行。


-

M？ns Rullg？rd
mr*@kth.se

eh *********** @ yahoo.com （hp******@yahoo.com）写在comp.unix.solaris：

|我从一本书中编写了那个程序，我编译了那个程序

|正确地在C ++编译器下但我编译了这些错误

| under unix !!

|

|错误 -

| --------

| part10_iti_r01_ch10_verbo_menu_driven_programs .c：在函数`main''中：

| part10_iti_r01_ch10_verbo_menu_driven_programs.c：6：警告：

|'argc''声明阴影参数

| part10_iti_r01_ch10_verbo_menu_driven_programs.c：7：警告：

|'argv''声明阴影参数

| part10_iti_r01_ch10_verbo_menu_driven_programs.c：22：语法错误
|在'''''令牌
| main（argc，argv）

| {

| int argc;

| char * argv [50 ];

| {


这应该是

int main（int argc，char * argv []）

{


你有太多的{和'过时的语法。 （正如之前提到的那样，b / b
，看来你用的任何书都应该烧掉。）


- -

__________________________________________________ ______________________

Alan Coopersmith al***@alum.calberkeley.org
http：//www.CSUA.Berkeley。 EDU / ~alalan / 又名： Al ********** ****@Sun.COM

为Sun Microsystems，Inc。工作，但绝对不代表

eh***********@yahoo.com (hp******@yahoo.com) writes in comp.unix.solaris:
|I wrote that program from a book that my compile that program
|correctly under C++ compiler but I got those errors for compiling
|under unix !!
|
|Errors-
|--------
|part10_iti_r01_ch10_verbo_menu_driven_programs.c: In function `main'':
|part10_iti_r01_ch10_verbo_menu_driven_programs.c: 6: warning:
|declaration of `argc'' shadows a parameter
|part10_iti_r01_ch10_verbo_menu_driven_programs.c: 7: warning:
|declaration of `argv'' shadows a parameter
|part10_iti_r01_ch10_verbo_menu_driven_programs.c: 22: syntax error
|before ''{'' token
|main (argc,argv)
|{
|int argc;
|char *argv[50];
|{

This should be
int main (int argc, char *argv[])
{

You''ve got too many {''s along with obsolete syntax. (As has been
mentioned before, it appears whatever book you''re using should be
burned.)

--
__________________________________________________ ______________________
Alan Coopersmith al***@alum.calberkeley.org
http://www.CSUA.Berkeley.EDU/~alanc/ aka: Al**************@Sun.COM
Working for, but definitely not speaking for, Sun Microsystems, Inc.

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