tpa t1pb2

#include <stdio.h>
#include <stdint.h>

typedef enum {
  READ, WRITE, DEL, RENAME, COPY
} PermsE;

void setPerm(uint8_t *perms, PermsE permNr) {
  *perms |= (1 << permNr);
}

void resetPerm(uint8_t *perms, PermsE permNr) {
  *perms &= ~(1 << permNr);
}

int hasPerm(uint8_t perms, PermsE permNr) {
  return 1 & (perms >> permNr);
}

void printPerms(uint8_t perms) {
  for (int i = 0; i < 5; i++) {
    if (!hasPerm(perms, i)) {
      printf("-/");
      continue;
    }
    switch(i) {
    case READ:
      printf("Read");
      break;
    case WRITE:
      printf("Write");
      break;
    case DEL:
      printf("Delete");
      break;
    case RENAME:
      printf("Rename");
      break;
    case COPY:
      printf("Copy");
      break;
    }
    putchar('/');
  }
  puts("");
}

int main(void) {
  uint8_t perms = 0;
  setPerm(&perms, WRITE);
  setPerm(&perms, RENAME);
  setPerm(&perms, DEL);
  printPerms(perms);
  resetPerm(&perms, WRITE);
  setPerm(&perms, READ);
  printPerms(perms);
  return 0;
}