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;i++){

       if(cb->count > 0){
       printf("%d",cb->buffer[cb->tail]);
       cb->count--;
       cb->tail = ((cb->tail+1)%(cb->capacity));
       } else {

        printf("NULL");
       }

        if(i < n-1){
            printf(" ");
        }
        
    }
    
    printf("\n");
    printf("Tail: %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