Hello,
I will try to explain my question. I am pretty new in C. And i want to program a text modul.
Using dynamic struct and dynamic arrays. it is not a homework its nor more like preperation for a test.
text stuctur: length without \0
dynamic array from type char and \0 should be save
Text prototype:
create(): parameter size, create a new text with a dynamic array, size define size.
it should have more place bcs of ´\0.
init(): parameter c string, with new size, text needs to be create()
data needs to copied by strlen() and strcpy(), it has to be returned
kill(): ofc delete dynamic array, set size on 0 and the pointer on Null
add(): two text struct on value: both text gets to one text.
Firstly the sum of both lengths is the new size. create() makes a new text
then copy the data. Finally return.
print(): text struct on value, data needs to get print.
The Code:
Code:struct text { int length; char *zeichen;}; struct text create(int size); struct text init(char string[]); void kill(struct text *rS); struct text add(struct text a, struct text b); void print(); struct text create(int size) { struct text s = { NULL, size }; s.zeichen = malloc((size + 1) * sizeof(char)); if (s.zeichen != NULL) { s.length = size;} return s;} void kill(struct text *rS) { if (rS->zeichen != NULL) free(rS->zeichen); rS->zeichen = NULL; rS->length = 0;} struct text init(char zeichen[]) { // copy text and a new length struct text newtext = create(strlen(zeichen)); strcpy(newtext, zeichen); //copy the new text return newtext;} struct text add(struct text a, struct text b) { struct text longtext = create(a.length + b.length); //size of both text strcat(longtext, a); // text a need to get add to b return b;} void print(struct text q) { printf("%s", q.zeichen);}
