关于字符串的二进制代码转换读写

自顶。。。

int n = 0;
while ((ch = fgetc(fp)) != EOF) {
n <<= 1;
if (ch == '1') ++n;
}

写入另一个文件呀

#include<stdio.h>
#include<conio.h>
#include<math.h>
int main()
{
FILE *fp,*fp1;
char a[10];
int i,p;
fp=fopen("file.txt","rb");
fp1=fopen("answer.txt","wt");
if(fp==NULL)
return 0;
while (!feof(fp))
{
p=0;
fscanf(fp,"%s\n",a);
puts(a);
for(i=7;i>=0;i--)
{p=p+(a[7-i]-48)*pow(2,i);}
printf("%d\n",p);
fprintf(fp1,"%s",&p);
}
fclose(fp);
fclose(fp1);
return 0;
}

没有完整的，还是只有片段，而且不管格式错误情况。
char str[16];
while (fscanf(infile, "%8s", str)) {
char ch = 0;
for (int i=0; i<8; ++i) {
ch <<= 1;
if (str[i] == '1') ++ch;
}
sprintf(outfile, "%c", ch);
}