Circular Buffer Read

Code

#include <stdio.h>

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

void read_bytes(CircularBuffer *cb, int n) {
    for(int i = 0;i<n; i++)
    {
       if(cb->count)
       {
        printf("%d",cb->buffer[cb->tail]);
        cb->tail = (cb->tail+1)%cb->capacity;
        cb->count--;
       }
       else
       {
        printf("NULL");
       }  
       if(i<n-1)
          printf(" ");   
    }
    printf("\nTail: %d",cb->tail);
}

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);
    read_bytes(&cb, n);

    return 0;
}

Solving Approach