In C how do I dynamically add command line arguments to a string array?

Question

At the moment the only way I can see it is by cycling through the argv argument list, getting the largest of the input strings and creating a new dynamic array with this largest size dictating the memory allocation for each element.

Or is there a more straightforward way?

Answer 1

See if the following helps:

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

int main(int argc, char* argv[]) {
  char** myStrings;
  int ii;
  myStrings = malloc(argc * sizeof *myStrings);
  for(ii = 0; ii < argc; ii++) {
    myStrings[ii] = malloc(strlen(argv[ii])+1);
    strcpy(myStrings[ii], argv[ii]);
  }
  for (ii = 0; ii < argc; ii++) {
    printf("copied argument %d: it is '%s'\n", ii, myStrings[ii]);
  }
}