Converting binary to octal based on stack binary

The code for converting a stack binary number to an octal number is as follows

#include <time.h> #include <math.h> # include <stdio.h> # include <stdlib.h> #define Stack_init_
SIZE #define STACKINCREMENT typedef char ELEMTYPE;

typedef struct {elemtype *base;//stack-bottom pointer elemtype *top;//stack top pointer int stacksize;//stack The maximum capacity currently usable}sqstack;
    void Initstack (Sqstack *s) {s->base = (elemtype*) malloc (stack_init_size*sizeof (elemtype)); if (! (
    S->base)) exit (0);
    S->top = s->base;
S->stacksize = stack_init_size; } void Push (Sqstack *s,elemtype e) {if (s->top-s->base >= s->stacksize) {s->base = (Elem
        type*) ReAlloc (S->base, (stackincrement + s->stacksize) *sizeof (elemtype)); if (! (
        S->base)) exit (0);
        S->top = s->base+ s->stacksize;
    S->stacksize = s->stacksize + stackincrement;
    } * (s->top) = e;
(s->top) + +;
    } void Pob (Sqstack *s,elemtype *e) {if (s->top==s->base) return;
    s->top--;
*e = * (S->top); } int StaCklen (Sqstack s) {return (s.top-s.base);}
   int main () {Sqstack s,p;
   int sum = 0;
   Initstack (&s);
   Initstack (&p);//The Stack elemtype C that stores octal numbers;
   printf ("Output the binary number that will be converted, and end with +");
   scanf ("%c", &c);
        while (c!= ' + ') {Push (&s,c);
   scanf ("%c", &c);
   } int len = Stacklen (s);

   printf ("Stack's current capacity%d\n", Len);
   int num = LEN/3;
   int tt = LEN%3;

   int count = 0;
            for (int i = 0; i < len;i++) {if (num>0) {Pob (&s,&c);
            sum = sum + (c-48) *pow (2.0,count);
            count++;
                if (count==3) {num--;
                c = sum + 48;
                Push (&AMP;P,C);
                sum = 0;
            Count = 0;

            }} else {Pob (&s,&c);
            sum = sum + (c-48) *pow (2.0,count);
            count++;
            if (count = = TT) {c = sum + 48;   Push (&AMP;P,C);
   }}} len = Stacklen (p);
   printf ("The current capacity of the octal stack%d\n", Len);
         for (int i = 0;i < len;i++) {Pob (&p,&c);
    printf ("%c", c);
   } printf ("\ n");

return 0;


 }