#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 EXIT_SUCCESS;
int /*<<< orphan*/ checkInput(double *, double *, double *);
int /*<<< orphan*/ printf(char *, ...);
int main() {
  double a, b, h;
  printf("Enter sides a and b and height h: ");
  checkInput(&a, &b, &h);
  printf("Area is: %.2lf", ((double)(a + b) / 2) * h);
  return (EXIT_SUCCESS);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xed2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    -0x10(%rbp),%rdi
lea    -0x18(%rbp),%rsi
lea    -0x20(%rbp),%rdx
call   1040 <checkInput@plt>
movsd  -0x10(%rbp),%xmm0
addsd  -0x18(%rbp),%xmm0
movsd  0xea0(%rip),%xmm1
divsd  %xmm1,%xmm0
mulsd  -0x20(%rbp),%xmm0
lea    0xebb(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
mov    0x2e62(%rip),%rax
mov    (%rax),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x18,%rsp
lea    0xedd(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0x10(%rsp),%rdi
lea    0x8(%rsp),%rsi
mov    %rsp,%rdx
call   1040 <checkInput@plt>
movsd  0x10(%rsp),%xmm0
addsd  0x8(%rsp),%xmm0
mulsd  0xea8(%rip),%xmm0
mulsd  (%rsp),%xmm0
lea    0xec7(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
mov    0x2e6e(%rip),%rax
mov    (%rax),%eax
add    $0x18,%rsp
ret

LLVM IR (-O0):
@.str = [35 x i8] c"Enter sides a and b and height h: \00"
@.str.1 = [15 x i8] c"Area is: %.2lf\00"
@EXIT_SUCCESS = global i32 0
define i32 @main() {
%1 = alloca i32
%2 = alloca double
%3 = alloca double
%4 = alloca double
store i32 0, i32* %1
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @checkInput(double* %2, double* %3, double* %4)
%7 = load double, double* %2
%8 = load double, double* %3
%9 = fadd double %7, %8
%10 = fdiv double %9, 2.000000e+00
%11 = load double, double* %4
%12 = fmul double %10, %11
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0), double %12)
%14 = load i32, i32* @EXIT_SUCCESS
ret i32 %14
}

LLVM IR (-O2):
@.str = [35 x i8] c"Enter sides a and b and height h: \00"
@.str.1 = [15 x i8] c"Area is: %.2lf\00"
@EXIT_SUCCESS = global i32 0
define i32 @main() {
%1 = alloca double
%2 = alloca double
%3 = alloca double
%4 = bitcast double* %1 to i8*
%5 = bitcast double* %2 to i8*
%6 = bitcast double* %3 to i8*
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @.str, i64 0, i64 0))
%8 = call i32 @checkInput(double* %1, double* %2, double* %3)
%9 = load double, double* %1
%10 = load double, double* %2
%11 = fadd double %9, %10
%12 = fmul double %11, 5.000000e-01
%13 = load double, double* %3
%14 = fmul double %13, %12
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0), double %14)
%16 = load i32, i32* @EXIT_SUCCESS
ret i32 %16
}