報錯 storage size of 'rec' isn't known
嘗試過在struct record rec一句前加給rec用int 或 double 或char宣告，但是沒有用，也會報錯，如下圖
#include<stdio.h>
#include<string.h>
int main(void)
{
FILE *fp;
fp=fopen("access.log","r+");//打開檔案
if(!fp)
{
printf("false\n");
return -1;//直接回傳
}
else{
printf("true\n");
}//判斷檔案是否成功打開
char line[2048];
int x,j,j_pos,j_pos1;
int lines=0;
int pos[9],pos1[9];
char s='[';
char s1=']';
struct record rec;
while((fgets(line,2048,fp))!=NULL)
{
x=strlen(line);
j_pos=0,j_pos1=0;
for(j=0;j<x;j++)
{
if(line[j]==s)
{
pos[j_pos]=j;
j_pos++;
}
if(line[j]==s1)
{
pos1[j_pos1]=j;
j_pos1++;
}
}
}
strncpy_s(rec.method,sizeof(rec.method),line+pos[0]+1,pos1[0]-pos[0]-1);
strncpy_s(rec.ip,sizeof(rec.ip),line+pos[1]+1,pos1[1]-pos[1]-1);
strncpy_s(rec.protocol,sizeof(rec.protocol),line+pos[2]+1,pos1[2]-pos[2]-1);
strncpy_s(rec.time,sizeof(rec.time),line+pos[3]+1,pos1[3]-pos[3]-1);
strncpy_s(rec.add,sizeof(rec.add),line+pos[4]+1,pos1[4]-pos[4]-1);
strncpy_s(rec.page,sizeof(rec.page),line+pos[5]+1,pos1[5]-pos[5]-1);
strncpy_s(rec.port,sizeof(rec.port),line+pos[6]+1,pos1[6]-pos[6]-1);
strncpy_s(rec.status,sizeof(rec.status),line+pos[7]+1,pos1[7]-pos[7]-1);
strncpy_s(rec.exploer_info,sizeof(rec.exploer_info),line+pos[8]+1,pos1[8]-pos[8]-1);
if(line[strlen(line)-1]=='\n')
{
lines++;
} int fclose(FILE *fp);//關閉檔案
return 0;
}
uj5u.com熱心網友回復：
struct record{
... method;
... ip;
... protocol;
... time;
... add;
... page;
... port;
... status;
... exploer_info;
};
這個是定義一個結構型別
record rec;
然后定義record型別的變數rec
上面的... 是結構體變數的型別
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標籤：新手樂園