Why can't we use two storage specifier in front of variable

[Player777]

Hi

Why can't we use two storage specifier in front of variable

#include <stdio.h>       
int main() 
{ 
    static register int i = 20;
	
	printf("\n %d", i));
	
    return 0; 
}

[laserlight]

It might be helpful to think of the opposite as a thought experiment: what if we could specify two storage classes for a variable? What would auto extern mean?

[Player777]

It might be helpful to think of the opposite as a thought experiment: what if we could specify two storage classes for a variable? What would auto extern mean?

I just need to remember that we can't do this