C + + Open File path

Error format:

Imread ("E:\test\opencv\abc.jpg");

Correct: Imread ("e:\\test\\opencv\\abc.jpg");

Error:

0x00007ffd15ea9e08 (in Opencv.exe) with unhandled exception: Microsoft C + + exception

Reason:

In C, when the output string, if you want to output a newline, it will add ' \ n ' this flag, similar to the output of a tab, plus ' \ t ', that is,
The backslash ("\") is a symbol that combines the characters that follow it and escapes them into other characters. According to this principle, if you want to output double quotation marks (' "'), you need to enter ' \ ',
In this way, the string containing the double quotation marks is written in memory correctly. So what if you want to enter a backslash? It's simple, just knock ' \ \ ' on it.
If the path string "E:\test\opencv\abc.jpg" is given to the C compiler, the actual write memory string does not contain a backslash "\".
Even the letters that follow the backslash are escaped to other characters, which is bound to go wrong.

C + + Open File path