Storing Strings from a File to an Array - c

Question

I have read the strings from two files and stored them into two separate arrays, I then tried sorting them and writing them into another file...This part works the way it is supposed to but what I really need to do is combine the strings from the two arrays into one so that i can sort them in alphabetical order and then write to a file but the problem is that when i try to store these two arrays into one array I get segmentation fault as the error message..I am really not sure how to store these two arrays into another one so that I can sort it in order...I know how to sort it I am just not sure how to read these into an another array... i cant use #DEFINE because I am going to write all of this into a function for a tester code...
I have tried something like
new[i] = str;
and also:
strcpy(new[i],str)
but neither of these work...any help would be greatly appreciated...
Here is my code:
#include<stdio.h>
#include<string.h>
main (void)
{
char str[200];
char str2[300];
char new[300];
char temp [300];
int linenumber=0;
FILE *fa = fopen ("book1.dat", "r");
FILE *fb = fopen ("book2.dat", "r");
FILE *fc = fopen ("fixed.txt", "w");
int i=0;
int j=0;
int k;
/*read the strings into an array while it is not the end of file*/
while(!feof(fa)&& !feof(fb))
{
linenumber++;
fscanf(fa,"%[^\n]\n",str);
fscanf(fb,"%[^\n]\n",str2);
/*compare strings in array and write to array*/
if(strcmp(str2, str)<0)
{
fprintf(fc, "%s\n", str2);
fprintf(fc, "%s\n", str);
}
if (strcmp(str2,str)>0)
{
fprintf(fc, "%s\n", str);
fprintf(fc, "%s\n", str2)
}
/*print out the results of str */
printf("%s", str);
}
}

Answer 1

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
typedef char* Type;
typedef struct vector {
size_t size;
size_t capacity;
Type *array;
} Vector;
Vector *vec_make(){
Vector *v;
v = (Vector*)malloc(sizeof(Vector));
v->size = 0;
v->capacity=16;
v->array=(Type*)realloc(NULL, sizeof(Vector)*(v->capacity *= 2));
return v;
}
void vec_add(Vector *v, Type value){
v->array[v->size] = value;
if(++v->size == v->capacity)
v->array=(Type*)realloc(v->array, sizeof(Vector)*(v->capacity *= 2));
}
size_t vec_size(Vector *v){
return v->size;
}
Type *vec_getArray(Vector *v){
return v->array;
}
void vec_free(Vector *v){
free(v->array);
free(v);
}
int cmp(const void *a, const void *b){
return strcmp(*(char**)a, *(char**)b);
}
void merge(const char *inpfile1, const char *inpfile2, const char *outfile){
FILE *fp;
char buff[256], **array;
Vector *v;
size_t c, size;
v = vec_make();
fp=fopen(inpfile1, "r");
while(NULL!=fgets (buff, 256, fp))
vec_add(v, strdup(buff));
fclose(fp);
fp=fopen(inpfile2, "r");
while(NULL!=fgets (buff, 256, fp))
vec_add(v, strdup(buff));
fclose(fp);
array=vec_getArray(v);
size=vec_size(v);
// qsort(array, size, sizeof(Type), cmp);
fp=fopen(outfile, "w");
for(c=0;c < size; ++c){
fputs(array[c], fp);
free(array[c]);
}
fclose(fp);
vec_free(v);
}
int main(){
merge("book1.txt", "book2.txt", "fixed.txt");
return 0;
}

Answer 2

Make new a char* array and use strdup to copy the string contained in str.