user: Please show me the C implementation that matches the assembly code listed below:

```asm
<handle_command>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0xa80,%rsp
  mov    %edi,%eax
  mov    %al,-0xa74(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    -0xa60(%rbp),%rdx
  lea    -0x920(%rbp),%rcx
  lea    -0x9f0(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <load_contacts@plt>
  mov    %eax,-0xa64(%rbp)
  cmpb   $0x43,-0xa74(%rbp)
  jne    L87
  lea    -0x100(%rbp),%rax
  mov    %rax,%rsi
  lea    D18(%rip),%rax
  mov    %rax,%rdi
  call   <get_user_input@plt>
  lea    -0xb0(%rbp),%rax
  mov    %rax,%rsi
  lea    D49(%rip),%rax
  mov    %rax,%rdi
  call   <get_user_input@plt>
  lea    -0x60(%rbp),%rax
  mov    %rax,%rsi
  lea    D39(%rip),%rax
  mov    %rax,%rdi
  call   <get_user_input@plt>
  lea    -0x60(%rbp),%r9
  lea    -0xb0(%rbp),%r8
  lea    -0x100(%rbp),%rcx
  lea    -0xa60(%rbp),%rdx
  lea    -0x920(%rbp),%rsi
  lea    -0x9f0(%rbp),%rax
  sub    $0x8,%rsp
  mov    -0xa64(%rbp),%edi
  push   %rdi
  mov    %rax,%rdi
  call   <handle_create@plt>
  add    $0x10,%rsp
  mov    %eax,-0xa64(%rbp)
  jmp    L66
L87:
  cmpb   $0x52,-0xa74(%rbp)
  jne    L65
  lea    -0x60(%rbp),%rax
  mov    %rax,%rsi
  lea    D17(%rip),%rax
  mov    %rax,%rdi
  call   <get_user_input@plt>
  lea    -0x60(%rbp),%rcx
  lea    -0xa60(%rbp),%rdx
  lea    -0x920(%rbp),%rsi
  lea    -0x9f0(%rbp),%rax
  mov    %rax,%rdi
  call   <handle_retrieve@plt>
  jmp    L66
L65:
  cmpb   $0x55,-0xa74(%rbp)
  jne    L77
  lea    -0x60(%rbp),%rax
  mov    %rax,%rsi
  lea    D17(%rip),%rax
  mov    %rax,%rdi
  call   <get_user_input@plt>
  lea    -0x150(%rbp),%rax
  mov    %rax,%rsi
  lea    D18(%rip),%rax
  mov    %rax,%rdi
  call   <get_user_input@plt>
  lea    -0x100(%rbp),%rax
  mov    %rax,%rsi
  lea    D49(%rip),%rax
  mov    %rax,%rdi
  call   <get_user_input@plt>
  lea    -0xb0(%rbp),%rax
  mov    %rax,%rsi
  lea    D39(%rip),%rax
  mov    %rax,%rdi
  call   <get_user_input@plt>
  lea    -0xb0(%rbp),%r9
  lea    -0x100(%rbp),%r8
  lea    -0x150(%rbp),%rcx
  lea    -0xa60(%rbp),%rdx
  lea    -0x920(%rbp),%rsi
  lea    -0x9f0(%rbp),%rax
  mov    -0xa64(%rbp),%edi
  push   %rdi
  lea    -0x60(%rbp),%rdi
  push   %rdi
  mov    %rax,%rdi
  call   <handle_update@plt>
  add    $0x10,%rsp
  jmp    L66
L77:
  cmpb   $0x44,-0xa74(%rbp)
  jne    L29
  lea    -0x60(%rbp),%rax
  mov    %rax,%rsi
  lea    D17(%rip),%rax
  mov    %rax,%rdi
  call   <get_user_input@plt>
  mov    -0xa64(%rbp),%edi
  lea    -0x60(%rbp),%rcx
  lea    -0xa60(%rbp),%rdx
  lea    -0x920(%rbp),%rsi
  lea    -0x9f0(%rbp),%rax
  mov    %edi,%r8d
  mov    %rax,%rdi
  call   <handle_delete@plt>
  mov    %eax,-0xa64(%rbp)
  jmp    L66
L29:
  cmpb   $0x4c,-0xa74(%rbp)
  jne    L66
  mov    -0xa64(%rbp),%ecx
  lea    -0xa60(%rbp),%rdx
  lea    -0x920(%rbp),%rsi
  lea    -0x9f0(%rbp),%rax
  mov    %rax,%rdi
  call   <handle_list@plt>
L66:
  nop
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L57
  call   <__stack_chk_fail@plt>
L57:
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: label: D18
type: string
name: extract_symbolic_data
arguments: label: D49
type: string
name: extract_symbolic_data
arguments: label: D39
type: string
name: extract_symbolic_data
arguments: label: D17
type: string

tool: D18: Name: 

tool: D49: Address: 

tool: D39: Phone: 

tool: D17: Index: 

assistant: ```c
int handle_command(char cmd) {
  char name[10][20];
  char address[10][200];
  char phoneNumber[10][10];
  int curLength = load_contacts(name, address, phoneNumber);
  if (cmd == 'C') {
    char newName[80];
    char newAddress[80];
    char newPhone[80];
    get_user_input("Name: ", newName);
    get_user_input("Address: ", newAddress);
    get_user_input("Phone: ", newPhone);
    curLength = handle_create(name, address, phoneNumber, newName, newAddress, newPhone, curLength);
  } else if (cmd == 'R') {
    char index[80];
    get_user_input("Index: ", index);
    handle_retrieve(name, address, phoneNumber, index);
  } else if (cmd == 'U') {
    char newName[80];
    char newAddress[80];
    char newPhone[80];
    char index[80];
    get_user_input("Index: ", index);
    get_user_input("Name: ", newName);
    get_user_input("Address: ", newAddress);
    get_user_input("Phone: ", newPhone);
    handle_update(name, address, phoneNumber, newName, newAddress, newPhone, index, curLength);
  } else if (cmd == 'D') {
    char index[80];
    get_user_input("Index: ", index);
    curLength = handle_delete(name, address, phoneNumber, index, curLength);
  } else if (cmd == 'L') {
    handle_list(name, address, phoneNumber, curLength);
  }
}
```