文件解压压缩

调用了7z.exe。首先先搜索硬盘内的压缩文件，没有搜索到直接进行下载（有待添加）。其次，进行文件的压缩和解压...部分功能有待完善，代码没有任何技术含量，无非是保持对技术的热爱。

#include <stdio.h> 
#include <stdlib.h> 
#include <windows.h> 
#include <string.h> 
#include <time.h> 
const int LEN = 1024;

void ShowTime();
void Search();
void Compress();
void Decompress();
void Help();

int main() 
{	
	int n = 0;
	while(n!=5)
	{
		ShowTime();
		printf("               =================================================          \n");
		printf("               +++++++++++++++++++++++++++++++++++++++++++++++++          \n");
		printf("               1++++++++++++++++++++Search+++++++++++++++++++++1          \n");
		printf("               2+++++++++++++++++++Compress++++++++++++++++++++2          \n");
		printf("               3+++++++++++++++++++Decompress++++++++++++++++++3          \n");
		printf("               4+++++++++++++++++++++Help++++++++++++++++++++++4          \n");
		printf("               5+++++++++++++++++++++Exit++++++++++++++++++++++5          \n");
		printf("               +++++++++++++++++++++++++++++++++++++++++++++++++          \n");
		printf("               =================================================          \n");

		printf("请选择操作类型：\n");
		scanf("%d",&n);
		switch(n)
		{
		case 1 : Search();break;
		case 2 : Compress();break;
		case 3 : Decompress();break;
		case 4 : Help();break;
		case 5 : return 0;break;
		default : printf("输入错误\n");

		}
	}
	return 0; 
}

void ShowTime()
{
	time_t now;
	now = time(NULL);
	printf("                         %s", ctime(&now)); 
	Sleep(1000);
	//system("cls");
}

void DirectoryList(LPCSTR Path)
{
	WIN32_FIND_DATA FindData;
	HANDLE hError;
	int FileCount = 0;
	char FilePathName[LEN];

	char FullPathName[LEN];
	strcpy(FilePathName, Path);
	strcat(FilePathName, "\\*.*");
	hError = FindFirstFile(FilePathName, &FindData);
	if (hError == INVALID_HANDLE_VALUE)
	{
		printf("搜索失败!");
		return;
	}
	while(::FindNextFile(hError, &FindData))
	{
		if (strcmp(FindData.cFileName, ".") == 0 
			|| strcmp(FindData.cFileName, "..") == 0 )
		{
			continue;
		}

		wsprintf(FullPathName, "%s\\%s", Path,FindData.cFileName);
		FileCount++;
		printf("\n%d  %s  ", FileCount, FullPathName);

		if (FindData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
		{
			printf("<Dir>");
			DirectoryList(FullPathName);
		}
	}
}

void Search()
{
	char path[LEN];
	printf("\nplease input the file Directory\n");
	scanf("%s",path);
	DirectoryList(path);
}

void Compress()
{
	char filename[100] = {'\"'};
	char cmd[300] = "7z.dll a ";
	//DOS下进入有空格文件夹需要加双引号
	printf("\nplease input the file name\n");
	scanf("%s", filename);
	strcat(cmd, "output ");//生成名为output压缩文件
	strcat(cmd, filename);//要压缩的文件名
	system(cmd); 
	//system("cls"); 
	//cmd 命令最后是这样的："C:\Program Files\WinRAR\winrar" a output filename
	//其中a是程序运行的参数 output是压缩包文件名 filename是输入的文件名
	//rar命令的语法请参照rar帮助文档
	printf("压缩完成!!\n");
	Sleep(2000);
}


void Decompress()
{
	char filename[100] = {'\"'};
	char cmd[300] = "7z.dll e ";
	printf("\nplease input the file name\n");
	scanf("%s", filename);
	strcat(cmd, filename);
	system(cmd); 
	printf("解压完成!!\n");
	Sleep(2000);
}

void Help()
{
	char cmd[300] = {0};
	strcpy(cmd,"7z.dll -h");
	system(cmd);
	Sleep(2000);
}