user: 请将以下的汇编代码转换成C语言代码：

```asm
<main>:
  endbr64
  push   %rbx
  sub    $0x30,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x28(%rsp)
  xor    %eax,%eax
  lea    D79(%rip),%rdi
  call   <printf@plt>
  lea    0x1c(%rsp),%rsi
  lea    D113(%rip),%rdi
  call   <scanf@plt>
  lea    D76(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    0x20(%rsp),%rsi
  lea    D25(%rip),%rbx
  mov    %rbx,%rdi
  call   <scanf@plt>
  lea    D90(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    0x24(%rsp),%rsi
  mov    %rbx,%rdi
  call   <scanf@plt>
  movss  0x1c(%rsp),%xmm0
  movss  0x20(%rsp),%xmm2
  movss  0x24(%rsp),%xmm4
  movaps %xmm2,%xmm1
  addss  %xmm2,%xmm1
  addss  %xmm0,%xmm1
  movss  D28(%rip),%xmm3
  movaps %xmm4,%xmm5
  mulss  %xmm3,%xmm5
  addss  %xmm5,%xmm1
  addss  %xmm2,%xmm0
  addss  %xmm4,%xmm0
  divss  %xmm3,%xmm0
  addss  %xmm0,%xmm1
  divss  D89(%rip),%xmm1
  movss  %xmm1,0xc(%rsp)
  pxor   %xmm0,%xmm0
  cvtss2sd %xmm1,%xmm0
  lea    D127(%rip),%rdi
  mov    $0x1,%eax
  call   <printf@plt>
  movss  0xc(%rsp),%xmm1
  comiss D70(%rip),%xmm1
  jae    L23
  movss  0xc(%rsp),%xmm6
  comiss D157(%rip),%xmm6
  jae    L38
  movss  0xc(%rsp),%xmm7
  comiss D95(%rip),%xmm7
  jae    L53
  movss  0xc(%rsp),%xmm7
  comiss D53(%rip),%xmm7
  jb     L84
  lea    D145(%rip),%rdi
  call   <puts@plt>
  jmp    L18
L23:
  lea    D147(%rip),%rdi
  call   <puts@plt>
L18:
  mov    0x28(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L32
  add    $0x30,%rsp
  pop    %rbx
  ret
L38:
  lea    D105(%rip),%rdi
  call   <puts@plt>
  jmp    L18
L53:
  lea    D19(%rip),%rdi
  call   <puts@plt>
  jmp    L18
L84:
  lea    D8(%rip),%rdi
  call   <puts@plt>
  jmp    L18
L32:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: data_tag: D79
type_guessed: string
name: disassemble_data
arguments: data_tag: D113
type_guessed: string
name: disassemble_data
arguments: data_tag: D76
type_guessed: string
name: disassemble_data
arguments: data_tag: D25
type_guessed: string
name: disassemble_data
arguments: data_tag: D90
type_guessed: string
name: disassemble_data
arguments: data_tag: D28
type_guessed: f32
name: disassemble_data
arguments: data_tag: D89
type_guessed: f32
name: disassemble_data
arguments: data_tag: D127
type_guessed: string
name: disassemble_data
arguments: data_tag: D70
type_guessed: byte[4]
name: disassemble_data
arguments: data_tag: D157
type_guessed: f32
name: disassemble_data
arguments: data_tag: D95
type_guessed: byte[4]
name: disassemble_data
arguments: data_tag: D53
type_guessed: byte[4]
name: disassemble_data
arguments: data_tag: D145
type_guessed: string
name: disassemble_data
arguments: data_tag: D147
type_guessed: string
name: disassemble_data
arguments: data_tag: D105
type_guessed: string
name: disassemble_data
arguments: data_tag: D19
type_guessed: string
name: disassemble_data
arguments: data_tag: D8
type_guessed: string

tool: D79: Digite a primeira nota: 

tool: D113: %f

tool: D76: Digite a segunda nota: 

tool: D25:  %f

tool: D90: Digite a terceira nota: 

tool: D28: 3

tool: D89: 7

tool: D127: 
Media de aproveitamento: %.2f.


tool: {"D70": [0x00,0x00,0x10,0x41]}

tool: D157: 7.5

tool: {"D95": [0x00,0x00,0xc0,0x40]}

tool: {"D53": [0x00,0x00,0x80,0x40]}

tool: D145: Conceito D.

tool: D147: Conceito A.

tool: D105: Conceito B.

tool: D19: Conceito C.

tool: D8: Conceito E.

assistant: ```c
void main() {
  float n1, n2, n3, me, ma;
  printf("Digite a primeira nota: ");
  scanf("%f", &n1);
  printf("Digite a segunda nota: ");
  scanf(" %f", &n2);
  printf("Digite a terceira nota: ");
  scanf(" %f", &n3);
  me = (n1 + n2 + n3) / 3.0;
  ma = (n1 + 2 * n2 + 3 * n3 + me) / 7.0;
  printf("\nMedia de aproveitamento: %.2f.\n", ma);
  if (ma >= 9)
    printf("Conceito A.\n");
  else if (ma >= 7.5)
    printf("Conceito B.\n");
  else if (ma >= 6)
    printf("Conceito C.\n");
  else if (ma >= 4)
    printf("Conceito D.\n");
  else
    printf("Conceito E.\n");
}
```