#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 *, float *, float *);
float sqrt(float);
int main() {
  float a, b, c, s, area;
  printf("Enter the lengths of sides\n");
  scanf("%f %f %f", &a, &b, &c);
  s = a + b + c;
  area = sqrt(s * (s - a) * (s - b) * (s - c));
  printf("The area of the triangle is %d\n\n", area);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec8(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
lea    -0x10(%rbp),%rcx
call   1040 <scanf@plt>
movss  -0x8(%rbp),%xmm0
addss  -0xc(%rbp),%xmm0
addss  -0x10(%rbp),%xmm0
movss  %xmm0,-0x14(%rbp)
movss  -0x14(%rbp),%xmm0
movss  -0x14(%rbp),%xmm1
subss  -0x8(%rbp),%xmm1
mulss  %xmm1,%xmm0
movss  -0x14(%rbp),%xmm1
subss  -0xc(%rbp),%xmm1
mulss  %xmm1,%xmm0
movss  -0x14(%rbp),%xmm1
subss  -0x10(%rbp),%xmm1
mulss  %xmm1,%xmm0
call   1050 <sqrt@plt>
movss  %xmm0,-0x18(%rbp)
movss  -0x18(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe63(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x18,%rsp
lea    0xedf(%rip),%rdi
call   1030 <puts@plt>
lea    0xea9(%rip),%rdi
lea    0x14(%rsp),%rsi
lea    0x10(%rsp),%rdx
lea    0xc(%rsp),%rcx
call   1050 <scanf@plt>
movss  0x14(%rsp),%xmm1
movss  0x10(%rsp),%xmm2
movaps %xmm1,%xmm0
addss  %xmm2,%xmm0
movss  0xc(%rsp),%xmm3
addss  %xmm3,%xmm0
movaps %xmm0,%xmm4
subss  %xmm1,%xmm4
mulss  %xmm0,%xmm4
movaps %xmm0,%xmm1
subss  %xmm2,%xmm1
mulss  %xmm4,%xmm1
subss  %xmm3,%xmm0
mulss  %xmm1,%xmm0
xorps  %xmm1,%xmm1
ucomiss %xmm1,%xmm0
jb     11b4 <main+0x74>
sqrtss %xmm0,%xmm0
jmp    11b9 <main+0x79>
call   1060 <sqrt@plt>
cvtss2sd %xmm0,%xmm0
lea    0xe45(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x18,%rsp
ret

LLVM IR (-O0):
@.str = [28 x i8] c"Enter the lengths of sides\0A\00"
@.str.1 = [9 x i8] c"%f %f %f\00"
@.str.2 = [33 x i8] c"The area of the triangle is %d\0A\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca float
%4 = alloca float
%5 = alloca float
%6 = alloca float
store i32 0, i32* %1
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.1, i64 0, i64 0), float* %2, float* %3, float* %4)
%9 = load float, float* %2
%10 = load float, float* %3
%11 = fadd float %9, %10
%12 = load float, float* %4
%13 = fadd float %11, %12
store float %13, float* %5
%14 = load float, float* %5
%15 = load float, float* %5
%16 = load float, float* %2
%17 = fsub float %15, %16
%18 = fmul float %14, %17
%19 = load float, float* %5
%20 = load float, float* %3
%21 = fsub float %19, %20
%22 = fmul float %18, %21
%23 = load float, float* %5
%24 = load float, float* %4
%25 = fsub float %23, %24
%26 = fmul float %22, %25
%27 = call float @sqrt(float %26)
store float %27, float* %6
%28 = load float, float* %6
%29 = fpext float %28 to double
%30 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str.2, i64 0, i64 0), double %29)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [9 x i8] c"%f %f %f\00"
@.str.2 = [33 x i8] c"The area of the triangle is %d\0A\0A\00"
@str = [27 x i8] c"Enter the lengths of sides\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 ([27 x i8], [27 x i8]* @str, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.1, i64 0, i64 0), float* %1, float* %2, float* %3)
%9 = load float, float* %1
%10 = load float, float* %2
%11 = fadd float %9, %10
%12 = load float, float* %3
%13 = fadd float %11, %12
%14 = fsub float %13, %9
%15 = fmul float %13, %14
%16 = fsub float %13, %10
%17 = fmul float %16, %15
%18 = fsub float %13, %12
%19 = fmul float %18, %17
%20 = call float @sqrt(float %19)
%21 = fpext float %20 to double
%22 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([33 x i8], [33 x i8]* @.str.2, i64 0, i64 0), double %21)
ret i32 0
}