linux gcc时出现读写文件的error

irisflowers 2012-03-22 06:52:17

m.c:14: error: expected declaration specifiers or ‘...’ before string constant
m.c:14: error: expected declaration specifiers or ‘...’ before string constant
m.c:14: error: expected declaration specifiers or ‘...’ before ‘stdin’
m.c:14: warning: data definition has no type or storage class
m.c:14: error: conflicting types for ‘freopen’
/usr/include/stdio.h:255: note: previous declaration of ‘freopen’ was here
m.c:15: error: expected declaration specifiers or ‘...’ before string constant
m.c:15: error: expected declaration specifiers or ‘...’ before string constant
m.c:15: error: expected declaration specifiers or ‘...’ before ‘stdout’
m.c:15: warning: data definition has no type or storage class
m.c:15: error: conflicting types for ‘freopen’
/usr/include/stdio.h:255: note: previous declaration of ‘freopen’ was here

我的14,15行是

freopen("sample_data.in","r",stdin);
freopen("sample_data.out","w",stdout);

...全文

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翔云123456 2012-03-23

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不是标点问题

如4楼所说

是函数语句没写对地方

翔云123456 2012-03-23

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是不是标点符号的问题的呢，使用英文下的标点

justkk 2012-03-23

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这两行应该放在函数体内
freopen("sample_data.in","r",stdin);
freopen("sample_data.out","w",stdout);

irisflowers 2012-03-23

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[Quote=引用 1 楼 justkk 的回复:]

程序的前20行贴一下看看
[/Quote]
#include<stdio.h>
#include<pthread.h>
#include<sys/types.h>
#include<unistd.h>

/*----declaring and initilazing matrices----*/
#define M 5000
int A[M][M];
int B[M][M];
int C[M][M];
int z=0;
int N;

freopen("sample_data.in","r",stdin);
freopen("sample_data.out","w",stdout);

/*------struct defination-----*/
struct v
{
int r; //row
int c; //column

};

justkk 2012-03-22