87. Peek N Bytes from Circular Buffer

#include <stdio.h>

typedef struct {
    int buffer[10];
    int head;
    int tail;
    int count;
    int capacity;
} CircularBuffer;

// Write your logic inside this function
void peek_bytes(CircularBuffer *cb, int n) {
    // Your code here
    int pk_head = cb->head;
    int pk_tail = cb->tail;
    int pk_count = cb->count;
    int pk_capacity = cb->capacity;
    for (int i = 0 ; i < n ; i++) {
        if (pk_count == 0) printf("NULL");
        else {
            printf("%d",cb->buffer[pk_tail]);
            pk_tail = (pk_tail + 1) % 10;
            pk_count--;
        }
        if (i<n-1) printf(" ");
    }
}

int main() {
    CircularBuffer cb = {
        .buffer = {10, 20, 30, 40, 50, 60, 70, 80, 90, 100},
        .head = 3,
        .tail = 7,
        .count = 6,
        .capacity = 10
    };

    int n;
    scanf("%d", &n);

    peek_bytes(&cb, n);

    return 0;
}