#define NULL 0;
unsigned char buf[] = {0x4F, 0x4D,0x41, 0x45, 0x52,0x41,
0x48,0x41, 0x59,0x41, 0x4b,0x55, 0x53,0x49, 0x4e,0x45,NULL};
unsigned char *dp;

for(dp=buf;dp!=NULL;dp++){
printf("%c",*dp);
}

これであなたたちの糞コンパイラでもＯＫよ。