copysort.c

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


static int ENTRIES = 20;

void swap(char **a, char **b);

int main(int argc, char *argv[]){

char **usCity = (char **)malloc(ENTRIES * sizeof(char *));
int cmpVal;
int cityCount = 0;
char *line;
size_t size;

while(1){
  // usCity[i] = NULL;
  if(getline(&line, &size, stdin) == EOF){
     break;
  }
  usCity[cityCount] = (char *)malloc(sizeof(char) * (size + 10));
  strncpy(usCity[cityCount++], line, size);
}

printf("\n\nSuccessfully Exited. Results:\n");
for (int i = 0; i < cityCount; i++){
    for (int j = i + 1; j < cityCount; j++)    {
      cmpVal = strcasecmp(usCity[i], usCity[j]);
      if (cmpVal > 0)
        swap(&usCity[i], &usCity[j]);
      else if (cmpVal == 0)
        if (isupper(usCity[i][0]))
          swap(&usCity[i], &usCity[j]);
    }
}

for(int c = 0; c < cityCount; c++){
   printf("%s", usCity[c]);
   free(usCity[c]);
}
exit(0);
}

void swap(char **a, char **b)
{
  char *temp = *a;
  *a = *b;
  *b = temp;
}