This topic created in 2949 days ago, the information mentioned may be changed or developed.
int fd; // 文件描述符
char buf[100];
想从 fd 读取 50 字节放到 buf 里，但是起始位置不是 0, 该咋写
不要申请额外的内存，然后拷贝到 buf 里
 |
1
htfy96 Apr 9, 2018
fseek
|
 |
2
choury Apr 9, 2018
read(fd, buf+50, len)
|
 |
3
pkookp8 Apr 10, 2018 via Android
man 2 open
man lseek man fopen man fseek |
 |
4
Andiry Apr 10, 2018
pread 了解一下
|
 |
5
liuminghao233 Apr 10, 2018 via iPhone
传指针的时候用 buf+50
|
Select Language