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

Solving Approach