linux c 获取文件行数

源代码如下：

/*获取文件行数*/int file_wc(const char *filename){int fd;register int linect = 0;char buf[MAXBSTZE];int len;char *p = NULL;if(filename) {if((fd = open(filename, O_RDONLY)) < 0) {fprintf(stderr, “open %s\n”,strerror(errno));return -1;}while(1) {if((len = read(fd,buf,MAXBSTZE)) == -1) {return -1;}if(len == 0){break;}for( p = buf; len–; ){if( *p == ‘\n’ ){++linect;}++p;}}}return linect;}int main(){printf(“%d\n”,file_wc(“a.txt”));return 0;}

，别想一下造出大海，必须先由小河川开始。