You have a lot of options provided by various answers, I'm just adding a few points.
You can create a string array as follows:
I. You can create an array of read only strings as follows:
char *string_array0[] = {"Hello", "World", "!" };
This will create array of 3 read-only strings. You cannot modify the characters of the string in this case i.e. string_array0[0][0]='R'; is illegal.
II. You can declare array of pointers & use them as you need.
char *string_array1[2]; /* Array of pointers */
string_array1[0] = "Hey there"; /* This creates a read-only string */
/* string_array1[0][0] = 'R';*/ /* This is illegal, don't do this */
string_array1[1] = malloc(3); /* Allocate memory for 2 character string + 1 NULL char*/
if(NULL == string_array1[1])
{
/* Handle memory allocation failure*/
}
string_array1[1][0] = 'H';
string_array1[1][1] = 'i';
string_array1[1][2] = '\0'; /* This is important. You can use 0 or NULL as well*/
...
/* Use string_array1*/
...
free(string_array1[1]); /* Don't forget to free memory after usage */
III. You can declare a two dimensional character array.
char string_array2[2][4]; /* 2 strings of atmost 3 characters can be stored */
string_array2[0][0] = 'O';
string_array2[0][1] = 'l';
string_array2[0][2] = 'a';
string_array2[0][3] = '\0';
string_array2[1][0] = 'H';
string_array2[1][1] = 'i';
string_array2[1][2] = '\0'; /* NUL terminated, thus string of length of 2 */
IV. You can use pointer to pointer.
char ** string_array3;
int i;
string_array3 = malloc(2*sizeof(char*)); /* 2 strings */
if(NULL == string_array3)
{
/* Memory allocation failure handling*/
}
for( i = 0; i < 2; i++ )
{
string_array3[i] = malloc(3); /* String can hold at most 2 characters */
if(NULL == string_array3[i])
{
/* Memory allocation failure handling*/
}
}
strcpy(string_array3[0], "Hi");
string_array3[1][0]='I';
string_array3[1][1]='T';
string_array3[1][2]='\0';
/*Use string_array3*/
for( i = 0; i < 2; i++ )
{
free(string_array3[i]);
}
free(string_array3);
Points to remember:
If you are creating read-only string, you cannot change the character
in the string.
If you are filling the character array, make sure you have
memory to accommodate NUL character & make sure you terminate your
string data with NUL character.
- If you are using pointers &
allocating memory, make sure you check if memory allocation is done
correctly & free the memory after use.
- Use string functions from
string.h for string manipulation.
Hope this helps!
P.S.: printf(1,"%s\n",paths[0]); looks shady