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) {
    // Your logic here
    // int index = (cb->tail+1);
    for(int i=0; i<n; i++)
    {
        if(cb->count == 0)
        {
            printf("NULL");
            if(i!=n-1) printf(" ");  
        }
        else
        {
            int dat = cb->buffer[cb->tail];
            cb->tail = (cb->tail+1)%cb->capacity;
            cb->count--;
            printf("%u",dat);
            if(i!=n-1) printf(" ");                
        }
    }
    printf("\nTail: %u",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