关于文件指针的使用

[yellowken2001]

#include <time.h>
#include <iomanip.h>
#include <stdio.h>
int main()
{

int c,i;
int a[16];
FILE *file;
if((file = fopen("1.data", "rb"))==NULL)
{
printf("can not open\n");
}
else
{
printf("file open succeed\n");
}
for (i=1;i<16;i++)
{
fread(&a[i],sizeof(int),1,file);
printf("µØַΪ%d\n",a[i]);
printf("µÄÊý¾ÝΪ%x\n",&a[i]);
}
fclose(file);
return 1;
}
上面是我的程序，我的本意将文件中的数据一个一个读出并打印为0X00这种格式，就是读一个，如原始文件为0x00,0x01,0x02,读出来后，打印出来就是
地址为***的数据为0x**，但是小弟半年多没写程序了，一时忘记用法了，各位帮帮忙，分散就是

[星羽]

nclude <stdio.h>

int main() 
{
    FILE* file = fopen("1.data", "rb");
    unsigned char ch = 0;
    int cnt = 0;

    if (!file)
    {
        printf("can not open the file\n");
        return 1;
    }

    printf("open file success\n\n");

    while (1)
    {
        fread(&ch, sizeof(ch) , 1, file);
        printf("%s0x%02x  ", cnt++ % 10 ? "" : "\n", ch);
        if (feof(file))
            break;
    }

    fclose(file);
    return 0;

}

// test

open file success


0x61  0x64  0x66  0x61  0x73  0x66  0x61  0x73  0x64  0x66
0x61  0x73  0x66  0x61  0x73  0x64  0x66  0x61  0x73  0x64
0x66  0x61  0x73  0x64  0x66  0x61  0x73  0x66  0x66  请按任意键继续. . .

[太乙]

up~~解决了？

[Wolf_FienD]

[Quote=引用 1 楼 akirya 的回复:]
#include <time.h>
#include <iomanip.h>
#include <stdio.h>
int main()
{

int c,i;
int a[16];
FILE *file;
if((file = fopen("1.data", "rb"))==NULL)
{
printf("can not open\n");
}
else
{
printf("file open succeed\n");
}
for (i=1;i <16;i++)
{
char c;
fread(&c,sizeof(char),1,file);
printf("0x%02x\n",c);
fclose(file);
return 1;
}
[/Quote]


为何 return 1 呢？

不是 return 0 的吗？

[K行天下]

你写成return 0也行啊

[yellowken2001]

谢谢各位，特别感谢调试的朋友

[珍惜生命远离CPP]

#include <time.h>
#include <iomanip.h>
#include <stdio.h>
int main()
{

int c,i;
int a[16];
FILE *file;
if((file = fopen("1.data", "rb"))==NULL)
{
printf("can not open\n");
}
else
{
printf("file open succeed\n");
}
for (i=1;i <16;i++)
{
char c;
fread(&c,sizeof(char),1,file);
printf("0x%02x\n",c);
fclose(file);
return 1;
}

[jieao111]

if((file = fopen("1.data", "rb"))==NULL)
{
printf("can not open\n");
return 0;
}

[冷月清晖]

%#x

[weiyijiji]

#include <time.h>
#include <iomanip.h>
#include <stdio.h>
int main()
{

int c,i;
int a[16];
FILE *file;
if((file = fopen("1.data", "rb"))==NULL)
{
printf("can not open\n");
exit(1);
}
else
{
printf("file open succeed\n");
}
for (i=1;i <16;i++)
{
int c;
fread(&c,sizeof(int),1,file);
printf("0x%02x\n",c);
fclose(file);
return 1;
}