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

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x38(%rbp)
  jmp    L68
L83:
  movl   $0x0,-0x34(%rbp)
  jmp    L96
L114:
  mov    -0x34(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    -0x38(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,%esi
  lea    D44(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0x30(%rbp),%rcx
  mov    -0x34(%rbp),%eax
  movslq %eax,%rsi
  mov    -0x38(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  add    %rsi,%rax
  shl    $0x2,%rax
  add    %rcx,%rax
  mov    %rax,%rsi
  lea    D29(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  addl   $0x1,-0x34(%rbp)
L96:
  cmpl   $0x2,-0x34(%rbp)
  jle    L114
  addl   $0x1,-0x38(%rbp)
L68:
  cmpl   $0x2,-0x38(%rbp)
  jle    L83
  lea    D35(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  movl   $0x0,-0x38(%rbp)
  jmp    L142
L107:
  movl   $0x0,-0x34(%rbp)
  jmp    L51
L25:
  mov    -0x34(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x38(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  add    %rcx,%rax
  mov    -0x30(%rbp,%rax,4),%eax
  mov    %eax,%esi
  lea    D46(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  addl   $0x1,-0x34(%rbp)
L51:
  cmpl   $0x2,-0x34(%rbp)
  jle    L25
  mov    $0xa,%edi
  call   <putchar@plt>
  addl   $0x1,-0x38(%rbp)
L142:
  cmpl   $0x2,-0x38(%rbp)
  jle    L107
  lea    D32(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  movl   $0x0,-0x38(%rbp)
  jmp    L40
L77:
  movl   $0x0,-0x34(%rbp)
  jmp    L18
L143:
  mov    -0x38(%rbp),%eax
  cmp    -0x34(%rbp),%eax
  je     L3
  mov    -0x34(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x38(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  add    %rcx,%rax
  mov    -0x30(%rbp,%rax,4),%eax
  mov    %eax,%esi
  lea    D46(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L57
L3:
  lea    D33(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
L57:
  addl   $0x1,-0x34(%rbp)
L18:
  cmpl   $0x2,-0x34(%rbp)
  jle    L143
  mov    $0xa,%edi
  call   <putchar@plt>
  addl   $0x1,-0x38(%rbp)
L40:
  cmpl   $0x2,-0x38(%rbp)
  jle    L77
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L92
  call   <__stack_chk_fail@plt>
L92:
  leave
  ret
```

tool_calls: name: unpack_data
arguments: label: D44
type_guessed: string
name: unpack_data
arguments: label: D29
type_guessed: string
name: unpack_data
arguments: label: D35
type_guessed: string
name: unpack_data
arguments: label: D46
type_guessed: string
name: unpack_data
arguments: label: D32
type_guessed: string
name: unpack_data
arguments: label: D33
type_guessed: string

tool: D44: Digite ELEMENTO da linha %d, coluna %d da matriz: 

tool: D29: %d

tool: D35: Matriz

tool: D46: %d	

tool: D32: 

Matriz menos a diagonal principal


tool: D33: -	

assistant: ```c
int main() {
  int lin, col, tab;
  int mat[3][3];
  for (lin = 0; lin < 3; lin++) {
    for (col = 0; col < 3; col++) {
      printf("Digite ELEMENTO da linha %d, coluna %d da matriz: ", lin + 1, col + 1);
      scanf("%d", &mat[lin][col]);
    }
  }
  printf("Matriz\n");
  for (lin = 0; lin < 3; lin++) {
    for (col = 0; col < 3; col++) {
      printf("%d\t", mat[lin][col]);
    }
    printf("\n");
  }
  printf("\n\nMatriz menos a diagonal principal\n\n");
  for (lin = 0; lin < 3; lin++) {
    for (col = 0; col < 3; col++) {
      if (lin != col)
        printf("%d\t", mat[lin][col]);
      else
        printf("-\t");
    }
    printf("\n");
  }
  return 0;
}
```