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

for(int i = 0; i<=n-1; i++){

if (cb->count==0){
    
    printf("NULL");

} else{
      int v = cb->buffer[cb->tail];
      printf("%d",v);
        cb->tail = (cb->tail+1)% cb->capacity;
        cb->count--; }

 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