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 end;
    if(n<cb->count) end = n + cb->tail;
    else    end = cb->count + cb->tail;
    for(int x=cb->tail; x< end; x++)
    {
        printf("%d",cb->buffer[x%10]);
        cb->tail = (cb->tail + 1)%10;
        if(x!=end-1)    printf(" ");
    }
    if(n>cb->count)
    for(int x=0;x<(n-cb->count);x++)
        printf(" NULL");
    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