C++文件路径字符串位置查找与截取

C++对于文件路径中的字符串的操作

#include
using namespace std;
using namespace cv;

void main() { 
	string str = "E:/训练/Sun 1/Sun 1/pic/last1/06.jpg";
	int Count=0;
	int a, b;
	for (int i = str.length() - 1; i >= 0; i--) {
		if (str[i] =='/' || str[i] == '\') {
			Count++;
			if (Count == 1) {
				a = i;
			}
			else if (Count == 2) {
				b = i;
			}			
		}
	}
	string result = str.substr(b + 1, a - b - 1);
	cout<< result << endl;	
}

输出结果：last1