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/**********************************
4.19 (1)
read
***********************************/
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
int main(void)
{
int fd, n;
char buf[30];
fd = open("/home/liaoye/lianxi/akae.txt", O_RDWR);
if(fd > 0)
{
printf("open success!\n");
}
else
{
printf("open error!\n");
exit(1);
}
read(fd, buf, 30);
printf("%s", buf);
return 0;
}
/**********************************
4.19 (2)
COPY
read AND write
*******
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#include "stdlib.h"
#include "math.h"
#include "stdio.h"
float objfx(float x[]);
void constraint(float x[] ......