The source is in hw.cpp
, which obviously is using some kind of argument parsing to look for ‘debug’.
For example:
#include <stdio.h>
#include <string.h>
int main(int argc, char *argv[])
{
if (argc > 1 && strcmp(argv[1], "debug") == 0)
printf("Hello World\n");
return 0;
}
If you would like to do argument parsing more involved then this I suggest you look to getopt
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solved How is this program running in debug mode? [closed]