C++ string如何获取文件路径文件名、文件路径、文件后缀(两种方式)

string path1 = "D:/datas/FusionTestData/datas/GF6_PMS_E111.2_N27.6_20180719_L1A1119837939-PAN.tiff"
string path2 = "D:\datas\FusionTestData\datas\GF6_PMS_E111.2_N27.6_20180719_L1A1119837939-PAN.tiff"
string::size_type iPos = (path1 .find_last_of('\\') + 1) == 0 ?  path1 .find_last_of('/') + 1: path1 .find_last_of('\\') + 1 ;
string ImgName = path1 .substr(iPos, path1 .length() - iPos);//获取带后缀的文件名
string ImgPath = path1 .substr(0,iPos);//获取文件路径
string ImgNameNoTag = ImgName.substr(0, ImgName.rfind("."));//获取不带后缀的文件名
string ImgNameTag = ImgName.substr(ImgName.rfind("."),ImgName.length());//获取后缀名

#include<iostream>
int main(){
	string path1 = "D:/datas/FusionTestData/datas/GF6_PMS_E111.2_N27.6_20180719_L1A1119837939-PAN.tiff";
	string path2 = "D:\datas\FusionTestData\datas\GF6_PMS_E111.2_N27.6_20180719_L1A1119837939-PAN.tiff";
	string path3 = "D:\\datas\\FusionTestData\\datas\\GF6_PMS_E111.2_N27.6_20180719_L1A1119837939-PAN.tiff";
	char orbitfilename[1024];
	char drive[_MAX_DRIVE];
	char dir[_MAX_DIR];
	char fname[_MAX_FNAME];
	char ext[_MAX_EXT];
	_splitpath(path1.c_str(), drive, dir, fname, ext);
	printf("drive:%s\n", drive);
	printf("dir:%s\n", dir);
	printf("fname:%s\n", fname);
	printf("ext:%s\n", ext);
	_makepath(orbitfilename, drive, dir, fname, "orbit");
	printf("orbitfilename:%s\n\n", orbitfilename);
	char orbitfilename2[1024];
	char drive2[_MAX_DRIVE];
	char dir2[_MAX_DIR];
	char fname2[_MAX_FNAME];
	char ext2[_MAX_EXT];
	_splitpath(path2.c_str(), drive2, dir2, fname2, ext2);
	printf("drive2:%s\n", drive2);
	printf("dir2:%s\n", dir2);
	printf("fname2:%s\n", fname2);
	printf("ext2:%s\n", ext2);
	_makepath(orbitfilename2, drive2, dir2, fname2, "test2");
	printf("orbitfilename2:%s\n\n", orbitfilename2);
	char orbitfilename3[1024];
	char drive3[_MAX_DRIVE];
	char dir3[_MAX_DIR];
	char fname3[_MAX_FNAME];
	char ext3[_MAX_EXT];
	_splitpath(path3.c_str(), drive3, dir3, fname3, ext3);
	printf("drive3:%s\n", drive3);
	printf("dir3:%s\n", dir3);
	printf("fname3:%s\n", fname3);
	printf("ext3:%s\n", ext3);
	_makepath(orbitfilename3, drive3, dir3, fname3, "test3");
	printf("orbitfilename3:%s\n\n", orbitfilename3);
	return 0;
	}

#include <string>
#include <iostream>
using namespace std;
int main()
{
	string name1 = "/a/b/c/v/zhiodfh.jpg";
	int pos1 = name1.find_last_of('/');
	string name2 = name1.substr(pos1 + 1);
	cout<<"pos1:" <<pos1<<endl;
	cout<<"name2:" <<name2<<endl;
	int pos2 = name2.find('.');
	string name3 = name2.substr(0,pos2);
	cout<<"name3:" <<name3<<endl;
	return 0;
}