I have the following code:
void sortStrings(char strings[5][32])
{
int i = 0, j = 0, wall = 0;
int min = i;
for (int i = wall; i < 5; i++){
min = i;
for (j = wall; j < 5; j++){
if (strcmp(strings[j], strings[min]) < 0){
min = j;
}
}
swapStrings(strings[min], strings[wall]);
wall++;
}
}
What this code does is sorts a 2d array of strings by alphabetical order, I have tested it and it works correctly, now my question is how could I implement this code WITHOUT using array operations (aka using pointers and pointer operations only).
This is what I have so far and it is crashing when I try to run it so what am I doing wrong?
{
int i = 0, j = 0, wall = 0;
char *p = strings;
int min;
for (i = wall; i < 5; i++){
min = i;
for (j = wall; j < 5; j++){
if (*(p + j) < *(p + min)){
min = j;
}
}
swapStrings(*(p + j),*(p + wall));
wall++;
}
}
Here is the swapStrings method I am using for reference:
void swapStrings(char string1[], char string2[])
{
char temp[32];
strcpy(temp, string1);
strcpy(string1, string2);
strcpy(string2, temp);
}
The expected output is: if I were to enter in 5 strings, lets say they are:
hello
goodbye
how
are
you
It should return:
are
goodbye
hello
how
you
Thank you.
You have two things wrong:
p
have to be char**
and not char*
Comparing yourself between strings need a loop such:
int t = 0; while (*(*(p + j)+t) && (*(*(p + j) + t) == *(*(p + min) + t))) t++; if (*(*(p + j) + t) < *(*(p + min) + t)) { min = j; }
Maybe you want to write your function for compare.
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