#include <stdlib.h>

long int i, l;
const long int faszom[2] = {58, 63};

void main() {
    for (i = 0; i < 1000000000; i++) {
	l = faszom[rand() & 1 != 0];
    }
}

#include <stdlib.h>

long int i, l;

void main() {
    for (i = 0; i < 1000000000; i++) {
	l = rand() & 1 != 0 ? 63 : 58;
    }
}

kemi242@linuxmint ~ $ time ./test1

real	0m18.352s
user	0m18.344s
sys	0m0.004s
kemi242@linuxmint ~ $ time ./test2

real	0m17.864s
user	0m17.848s
sys	0m0.008s