This solution has two nested loops of strtok_s, because strtok is not re-entrant. This is MSVC, some systems implement the similar strtok_r.
I have created output in accordance with the top of your question, this can be modified to suit other output, it was not very clear. In this case, it was not really necessary to have two nested loops, but your subsequent examples confuse the issue by breaking up the comma'ed input.
#include <stdio.h>
#include <string.h>
int main(void) {
char c[] = "[1,2,3][5,7,8]";
char *tok1 = NULL;
char *tok2 = NULL;
char *end1 = NULL;
char *end2 = NULL;
int comma = 0;
char identifier = 'a';
tok1 = strtok_s(c, "[]", &end1);
while(tok1 != NULL) { // outer loop splitting [bracket] parts
printf("%c = [", identifier);
comma = 0; // control comma output
tok2 = strtok_s(tok1, ",", &end2);
while(tok2 != NULL) { // inner loop splitting ,comma, parts
if(comma) { // check if comma required
printf(",");
}
printf("%s", tok2);
comma = 1; // a comma will be needed
tok2 = strtok_s(NULL, ",", &end2);
}
printf("] //of type int %c[]\n", identifier);
identifier++;
tok1 = strtok_s(NULL, "[]", &end1);
}
return 0;
}
The simpler program where you don't need to examine within the [brackets] is
#include <stdio.h>
#include <string.h>
int main(void) {
char c[] = "[1,2,3][5,7,8]";
char *tok = NULL;
char identifier = 'a';
tok = strtok(c, "[]");
while(tok != NULL) {
printf("%c = [%s] //of type int %c[]\n", identifier, tok, identifier);
identifier++;
tok = strtok(NULL, "[]");
}
return 0;
}
In both cases the output is:
a = [1,2,3] //of type int a[]
b = [5,7,8] //of type int b[]
EDIT altered the second example to give output as per OP's recent comment above.
#include <stdio.h>
#include <string.h>
int main(void) {
char c[] = "[1,2,3][5,7,8]";
char *tok = NULL;
char identifier = 'a';
tok = strtok(c, "[]");
while(tok != NULL) {
printf("int %c[] = { %s };\n", identifier, tok, identifier);
identifier++;
tok = strtok(NULL, "[]");
}
return 0;
}
Program output:
int a[] = { 1,2,3 };
int b[] = { 5,7,8 };
