86. Circular Buffer Read

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