Peek N Bytes from Circular Buffer

Code

#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
    while (n){
        printf("%d", cb->buffer[cb->tail]); 
        ++cb->tail; 

        if (cb->tail >= cb->capacity){
            cb->tail %= cb->capacity; 
        }
        --n; 
        --cb->count; 

        if (cb->count ==0 && n >0){
            for (int i=0; i < n; i++){
                printf(" NULL");
            }
            break; 
        }
        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;
}

Solving Approach