[C][help request] variable with typestruct

[suricata]

I have this code:

Code:

typedef struct {
    unsigned short a, b, c, d, e, f, g, h;
}est_;
est_ est[512];

I want to know if there is a way to access to a variable of est by this kind of thing:

Code:

var='a';
est[1].[var]=0;

Yes, it doesnt work but, there is a way to do such a thing?

Greetings!