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
    // for(int i = 0;i<n;i++)
    // {
    //     if(cb->count <= 0)
    //     {
    //         printf("NULL");
    //     }
    //     else
    //     {
    //         printf("%d",cb->buffer[(cb->tail + i)%cb->capacity]);
    //     }
    //     if(i != n-1) printf(" ");
    //     cb->count--;
    // }
    // cb->count += n;

    for(int i = 0;i < n;i++)
    {
        if(cb->count <= i)
        {
            printf("NULL");
        }
        else{
            printf("%d",cb->buffer[((cb->tail)+ i)%cb->capacity]);
        }

        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;
}