【C】获取当前工作目录及上级目录

获取当前工作目录及上级目录，C代码实现

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <direct.h>
#include <memory.h>
#include <string.h>


/*
*@bref    获取当前工作目录
*/
void get_current_directory(char* root)
{
    char rootPath[256] = { 0 };
    char *buffer = NULL;
    if ((buffer = _getcwd(NULL, 0)) == NULL)
    {
        printf_s(" _getcwd function get current working directory failed! \n");
    }
    else
    {
        sprintf_s(rootPath, 256,"%s", buffer);
        free(buffer);
    }
    for (int i = 0; i < sizeof(rootPath); i++)
    {
        if (rootPath[i] == '\\')
        {
            rootPath[i] = '/';
        }
    }
    memcpy(root, rootPath, sizeof(rootPath));
}

/*
*@bref    获取当前工作目录的上级目录
*/
void get_parent_directory(char* root)
{
    char parPath[256] = { 0 };
    get_current_directory(parPath);
    int index = 0;
    char * result = strrchr(parPath, '/');  // search from back to front
    if (result != NULL) {
        index = result - parPath;
    }
    char rootPath[256] = { 0 };
    strncpy_s(rootPath, 256, parPath, index);

    memcpy(root, rootPath, sizeof(rootPath));
}

测试用例：

int main()
{
    static char root[256] = { 0 };

    get_current_directory(root);
    printf("current directory : %s \n", root);
    printf("\n");
    memset(root, 0, 256);
    get_parent_directory(root);
    printf("parent directory : %s\n", root);

    getchar();

    return 0;
}

输出结果：