Search - printf.c

Search - printf.c - List

[Other] 4 DL : 0: 学会对文件的记录锁定，及解锁。#include <stdio.h> #include <unistd.h> #include <fcntl.h> int main() { int fd int i struct { char name[20] uint ID int age } myrec fd =open(\"name\", O_RDWR|O_CREAT, 0755) if (fd == -1) return -1 printf(\"Input your name:\") scanf(\"％s\", myrec.name) printf(\"Inpute your ID :\") scanf(\"％d\", &myrec.ID) printf(\"Input your age :\") scanf(\"％d\", &myrec.age) lseek(fd, 0,SEEK_END) lockf(fd, 1, 0) write(fd, (void *)&myrec, sizeof(myrec)) lockf(fd, 0 ,0) return 0 } 执行命令cc lock.c –o lock.out Chmod +x lock.out ./lock.out
Date : 2008-10-13 Size : 9.08kb User : 华羿