#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 *, float);
int /*<<< orphan*/ scanf(char *, float *);
int main() {
  float a, b, c, max;
  max = 0;
  scanf("%f\n", &a);
  scanf("%f\n", &b);
  scanf("%f\n", &c);
  if (a > max)
    max = a;
  if (b > max)
    max = b;
  if (c > max)
    max = c;
  printf("%.1f", max);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x14(%rbp)
lea    0xec2(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xeb2(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xea2(%rip),%rdi
lea    -0x10(%rbp),%rsi
call   1040 <scanf@plt>
movss  -0x8(%rbp),%xmm0
ucomiss -0x14(%rbp),%xmm0
jbe    1180 <main+0x60>
movss  -0x8(%rbp),%xmm0
movss  %xmm0,-0x14(%rbp)
movss  -0xc(%rbp),%xmm0
ucomiss -0x14(%rbp),%xmm0
jbe    1199 <main+0x79>
movss  -0xc(%rbp),%xmm0
movss  %xmm0,-0x14(%rbp)
movss  -0x10(%rbp),%xmm0
ucomiss -0x14(%rbp),%xmm0
jbe    11b2 <main+0x92>
movss  -0x10(%rbp),%xmm0
movss  %xmm0,-0x14(%rbp)
movss  -0x14(%rbp),%xmm0
lea    0xe46(%rip),%rdi
call   1030 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xed4(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1040 <scanf@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1040 <scanf@plt>
lea    0x4(%rsp),%rsi
mov    %rbx,%rdi
call   1040 <scanf@plt>
movss  0xc(%rsp),%xmm0
xorps  %xmm1,%xmm1
maxss  %xmm1,%xmm0
movss  0x8(%rsp),%xmm1
maxss  %xmm0,%xmm1
movss  0x4(%rsp),%xmm0
maxss  %xmm1,%xmm0
lea    0xe89(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [4 x i8] c"%f\0A\00"
@.str.1 = [5 x i8] c"%.1f\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca float
%4 = alloca float
%5 = alloca float
store i32 0, i32* %1
store float 0.000000e+00, float* %5
%6 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), float* %2)
%7 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), float* %3)
%8 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), float* %4)
%9 = load float, float* %2
%10 = load float, float* %5
%11 = fcmp ogt float %9, %10
br i1 %11, label %12, label %14
12: ; preds = %0
%13 = load float, float* %2
store float %13, float* %5
br label %14
14: ; preds = %12, %0
%15 = load float, float* %3
%16 = load float, float* %5
%17 = fcmp ogt float %15, %16
br i1 %17, label %18, label %20
18: ; preds = %14
%19 = load float, float* %3
store float %19, float* %5
br label %20
20: ; preds = %18, %14
%21 = load float, float* %4
%22 = load float, float* %5
%23 = fcmp ogt float %21, %22
br i1 %23, label %24, label %26
24: ; preds = %20
%25 = load float, float* %4
store float %25, float* %5
br label %26
26: ; preds = %24, %20
%27 = load float, float* %5
%28 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), float %27)
%29 = load i32, i32* %1
ret i32 %29
}

LLVM IR (-O2):
@.str = [4 x i8] c"%f\0A\00"
@.str.1 = [5 x i8] c"%.1f\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 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), float* %1)
%8 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), float* %2)
%9 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), float* %3)
%10 = load float, float* %1
%11 = fcmp ogt float %10, 0.000000e+00
%12 = select i1 %11, float %10, float 0.000000e+00
%13 = load float, float* %2
%14 = fcmp ogt float %13, %12
%15 = select i1 %14, float %13, float %12
%16 = load float, float* %3
%17 = fcmp ogt float %16, %15
%18 = select i1 %17, float %16, float %15
%19 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), float %18)
ret i32 0
}