Wrong output when printing one of the elements in argv - c

Question

I am writing a program that recurses through directories but came across a strange problem with my code. I compile and run the code with the following:
./sorter -c food -d thisdir -o thatdir
The following gives me a total argument count of 7. However when I try to check my inputs, I get unexpected results:
int main(int argc, char ** argv){
int checkInputs = checkFlags(argc,argv);
if(checkInputs == 1){
fileSearch(".");
}
else if(checkInputs == 2){
printf("arg counts %d\n",argc);
printf("%s\n",argv[4]);
fileSearch(argv[4]);
}
else if(checkInputs == 3){
printf("arg counts %d\n",argc);
printf("%s\n",argv[4]);
fileSearch(argv[4]);
}
return 0;
}
It returns the expected output when checkInputs is 2 but when it is 3 I get the following when I print argv[4]:
-d
The following is my checkInputs function, which may be causing this:
int checkFlags(int argc, char * argv[]) {
int output;
if(argc < 3){
printf("Not enough arguments\n");
output = 0;
return output;
}
else{
int options;
char * input = NULL;
while((options = getopt(argc,argv,"c:d::o::")) != -1){
switch(options) {
case 'c':
input = optarg;
//printf("Mandatory flag: %s\n",optarg);
output = 1;
break;
case 'd':
//printf("We have an optional %s\n",argv[4]);
output = 2;
break;
case 'o':
//printf("We have two optionals: -d: %s & -o: %s\n",argv[4],argv[6]);
output = 3;
break;
/* Probably don't need this case statement*/
case '?':
if(optopt == 'c'){
printf("Unknown option, -%c not present\n",optopt);
exit(0);
}
break;
}
}
}
return output;
}
Everything works fine however if the program is only compiled with the first 2 flags.

Answer 1

By debugging your code, I actually get a segmentation fault, when checkInputs == 2 and ./program -c hello -d. You should fix this, by adding a IF and check if a path is provided, for the option -d. Also keep in mind, that the sequence of the parameters can differ. You can save the extra options in a variable to access them out of the checkFlags function.
Executing ./program -c food -d thisdir -o thatdir outputs:
Mandatory flag: food
We have an optional thisdir
We have two optionals: -d: thisdir & -o: thatdir
arg counts 7
-o
It prints the expected.