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#include <stdlib.h>
#include <stdio.h>
int b=0;
int c=0;
char flag = 0;
#define PASS_A(a) flag & 0x01 ? c : (flag |= 0x01, c = ntohs(a))
int dosomething(int a) {
return a;
}
int main() {
int i = 0;
int a = 1234;
//for (i = 0; i < 100000000L; i++) {
for (i = 0; i < 10; i++) {
printf("PRE : a %d b %d c %d, flag %s\n", a,b,c, flag & 0x01 ? "SET":"NOT SET");
a = dosomething(PASS_A(a));
printf("POST: a %d b %d c %d, flag %s\n", a,b,c, flag & 0x01 ? "SET":"NOT SET");
// a = ntohs(a);
}
exit(0);
}
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