What is the alternative to getopt function on Windows c++? [duplicate]
Microsoft has provided a nice implementation (as well as some other helpers) inside the open source IoTivity project here you could possibly re-use (pending any licensing requirements you may have):
Take a look at the "src" and "include" directories here for "getopt.h/.c".
https://github.com/iotivity/iotivity/tree/master/resource/c_common/windows
If you had searched you would have found another thread that goes over some compatibility libraries for getopt, among other implementations, for Windows based systems.
getopt.h: Compiling Linux C-Code in Windows
On another note, you could always use the va_arg, va_list, va_start, and va_end functions to process arguments as well.
/* va_arg example */#include <stdio.h> /* printf */#include <stdarg.h> /* va_list, va_start, va_arg, va_end */int FindMax (int n, ...){ int i,val,largest; va_list vl; va_start(vl,n); largest=va_arg(vl,int); for (i=1;i<n;i++) { val=va_arg(vl,int); largest=(largest>val)?largest:val; } va_end(vl); return largest;}int main (){ int m; m= FindMax (7,702,422,631,834,892,104,772); printf ("The largest value is: %d\n",m); return 0;}Reference: http://www.cplusplus.com/reference/cstdarg/va_list/