linux c 提取文件名

#include <stdio.h>
#include <string.h>

void extract_filename(const char *path, char *filename) {
    const char *last_slash = strrchr(path, '/');
    if (last_slash != NULL) {
        strcpy(filename, last_slash + 1);
    } else {
        strcpy(filename, path);
    }
}

int main() {
    const char *path = "/home/user/documents/report.pdf";
    char filename[256];
    extract_filename(path, filename);
    printf("Filename: %s\n", filename);
    return 0;
}

void normalize_path(char *path) {
    char *src = path, *dst = path;
    while (*src) {
        if (*src != '/' || (src > path && *(src - 1) != '/')) {
            *dst++ = *src;
        }
        src++;
    }
    if (dst > path && *(dst - 1) == '/') {
        dst--;
    }
    *dst = '\0';
}

if (path == NULL || *path == '\0') {
    fprintf(stderr, "Invalid path\n");
    return 1;
}