打印文件的二进制（C代码）

打印文件的二进制格式，C代码：

#include <stdio.h>

unsigned char buff[1024];

void print_bin(unsigned char *buff, int i)
{
    int shirt = 128;
    for (int k = 0; k < 8; k++) {
        if (shirt & buff[i]) {
            printf("1");
        }
        else
            printf("0");
        shirt = shirt >> 1;
    }
}

int main(int argc, char ** argv)
{
    if (argc < 2) {
        printf("please input the file name!\n");
        return 0;
    }
    FILE * fp = fopen(argv[1], "rb");
    int len = 0;
    int acc = 0;
    while ((len = fread(buff, 1, 1024, fp)) > 0) {
        printf("%d\n", len);
        for (int i = 0; i < len; i++) {
            print_bin(buff, i);
            printf(" ");
            acc++;
        }
        if (acc % 10 == 0) printf("\n");
    }
    printf("\n");
    fclose(fp);
    return 0;
}