Ok, so basically I am looking for a number following inputs a and b and I'm searching for c and d without requiring additional info. When I try to do this using getopt, however, my loop never executes. Here is some example code:
int aa = 0;
int av = 0;
int ab = 0;
int bv = 0;
int ac = 0;
int cord = 0;// no c or d = 0, c = 1, d = 2
//flags and a/b value holders
int getoptvalue = 0;
printf("starting getopt\n");
while((getoptvalue = getopt(argc,argv,"cda:b:")) != -1){
printf("inside getopt\n");
switch(getoptvalue){
case a:if(aa||ab){
exit(1);
}
else{
aa = 1;
av = atoi(optarg);//takes int value following 'a' for storage in av?
}break;
case b:if(ab){
exit(1);
}
else{
ab = 1;
bv = atoi(optarg);//takes following int value for storage?
}break;
case c:if(ac){
exit(1);
}
else{
ac = 1;//c/d switch
cord = 1; // showing c was reached
}break;
case d:if(ac){
exit(1);
}
else{
ac = 1;
cord = 2; //showing d was reached
}break;
default: break;
}
printf("done.\n");
}
When compiled, this code prints:
$prog1 a1 b2 starting getopt done.
It clearly isn't running the loop since it never prints "inside getopt", but I cannot figure out why. Any ideas?
