Too memory used by the stack

Hi everyone
I use VS Community 17.8.3 on a Hp Pc i7-9700 32Gb Ram W10pro 64

compiling the attached code I received a warning with code C6262:
"The function uses '4321508' bytes of stack. It is recommended to move some data to the heap."
The program crashed so I set the value you see in the image and now the program runs but it takes more than an hour to analyze 21000KB of text files

Does anyone have any suggestions for further settings or code modifications to optimize everything ?

Thank you

Attached Images

 

Attached Files

• 10x9x1600x5.cpp (7.3 KB)