#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, float *);
int main() {
  float num1, num2, num3;
  printf("Inserisci il primo numero\n");
  scanf("%f", &num1);
  printf("Inserisci il secondo numero\n");
  scanf("%f", &num2);
  printf("Inserisci il terzo numero\n");
  scanf("%f", &num3);
  float media = (num1 + num2 + num3) / 3;
  printf("La media e\' %f \n", media);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xed5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xee2(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xed5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec4(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xed4(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xea6(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1040 <scanf@plt>
movss  -0x4(%rbp),%xmm0
addss  -0x8(%rbp),%xmm0
addss  -0xc(%rbp),%xmm0
movss  0xe67(%rip),%xmm1
divss  %xmm1,%xmm0
movss  %xmm0,-0x10(%rbp)
movss  -0x10(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xea8(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xedc(%rip),%rdi
call   1030 <puts@plt>
lea    0xebc(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
lea    0xed6(%rip),%rdi
call   1030 <puts@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
lea    0xed9(%rip),%rdi
call   1030 <puts@plt>
lea    0x4(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
movss  0xc(%rsp),%xmm0
addss  0x8(%rsp),%xmm0
addss  0x4(%rsp),%xmm0
divss  0xe5f(%rip),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe5b(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [27 x i8] c"Inserisci il primo numero\0A\00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [29 x i8] c"Inserisci il secondo numero\0A\00"
@.str.3 = [27 x i8] c"Inserisci il terzo numero\0A\00"
@.str.4 = [17 x i8] c"La media e' %f \0A\00"
define i32 @main() {
%1 = alloca float
%2 = alloca float
%3 = alloca float
%4 = alloca float
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %1)
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.2, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %2)
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.3, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %3)
%11 = load float, float* %1
%12 = load float, float* %2
%13 = fadd float %11, %12
%14 = load float, float* %3
%15 = fadd float %13, %14
%16 = fdiv float %15, 3.000000e+00
store float %16, float* %4
%17 = load float, float* %4
%18 = fpext float %17 to double
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.4, i64 0, i64 0), double %18)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%f\00"
@.str.4 = [17 x i8] c"La media e' %f \0A\00"
@str = [26 x i8] c"Inserisci il primo numero\00"
@str.5 = [28 x i8] c"Inserisci il secondo numero\00"
@str.6 = [26 x i8] c"Inserisci il terzo numero\00"
define i32 @main() {
%1 = alloca float
%2 = alloca float
%3 = alloca float
%4 = bitcast float* %1 to i8*
%5 = bitcast float* %2 to i8*
%6 = bitcast float* %3 to i8*
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @str, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %1)
%9 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([28 x i8], [28 x i8]* @str.5, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %2)
%11 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @str.6, i64 0, i64 0))
%12 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %3)
%13 = load float, float* %1
%14 = load float, float* %2
%15 = fadd float %13, %14
%16 = load float, float* %3
%17 = fadd float %15, %16
%18 = fdiv float %17, 3.000000e+00
%19 = fpext float %18 to double
%20 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @.str.4, i64 0, i64 0), double %19)
ret i32 0
}