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

        // Handle spacing
        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;
}

Solving Approach