#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;
float inches2metres(float, float);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, float *);
int main(int argc, char **argv) {
  float a, b, c;
  do {
    printf("Please enter feet:");
    scanf("%f", &a);
    printf("Please enter inches:");
    scanf("%f", &b);
    c = inches2metres(a, b);
    printf(" %f feet %f inches in metres is %f metres\n", a, b, c);
  } while (a > 0 && b > 0);
  printf("Goodbye");
  return (EXIT_SUCCESS);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
lea    0xeb3(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xeb8(%rip),%rdi
lea    -0x14(%rbp),%rsi
call   1050 <scanf@plt>
lea    0xeab(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xe9a(%rip),%rdi
lea    -0x18(%rbp),%rsi
call   1050 <scanf@plt>
movss  -0x14(%rbp),%xmm0
movss  -0x18(%rbp),%xmm1
call   1030 <inches2metres@plt>
movss  %xmm0,-0x1c(%rbp)
movss  -0x14(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  -0x18(%rbp),%xmm1
cvtss2sd %xmm1,%xmm1
movss  -0x1c(%rbp),%xmm2
cvtss2sd %xmm2,%xmm2
lea    0xe73(%rip),%rdi
mov    $0x3,%al
call   1040 <printf@plt>
movss  -0x14(%rbp),%xmm0
xor    %eax,%eax
xorps  %xmm1,%xmm1
ucomiss %xmm1,%xmm0
mov    %al,-0x1d(%rbp)
jbe    11e6 <main+0xb6>
movss  -0x18(%rbp),%xmm0
xorps  %xmm1,%xmm1
ucomiss %xmm1,%xmm0
seta   %al
mov    %al,-0x1d(%rbp)
mov    -0x1d(%rbp),%al
test   $0x1,%al
jne    1146 <main+0x16>
lea    0xe5e(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    0x2dda(%rip),%rax
mov    (%rax),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
lea    0xebe(%rip),%r14
lea    0xeca(%rip),%rbx
lea    0x4(%rsp),%r15
lea    0xec1(%rip),%r12
mov    %rsp,%r13
lea    0xecc(%rip),%rbp
nop
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    %r15,%rsi
call   1050 <scanf@plt>
mov    %r12,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    %r13,%rsi
call   1050 <scanf@plt>
movss  0x4(%rsp),%xmm0
movss  (%rsp),%xmm1
call   1030 <inches2metres@plt>
movss  0x4(%rsp),%xmm1
xorps  %xmm3,%xmm3
cvtss2sd %xmm1,%xmm3
movss  (%rsp),%xmm1
cvtss2sd %xmm1,%xmm1
xorps  %xmm2,%xmm2
cvtss2sd %xmm0,%xmm2
mov    %rbp,%rdi
movaps %xmm3,%xmm0
mov    $0x3,%al
call   1040 <printf@plt>
xorps  %xmm1,%xmm1
movss  0x4(%rsp),%xmm0
ucomiss %xmm1,%xmm0
jbe    11dc <main+0xac>
movss  (%rsp),%xmm0
ucomiss %xmm1,%xmm0
ja     1160 <main+0x30>
lea    0xe73(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x2def(%rip),%rax
mov    (%rax),%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [19 x i8] c"Please enter feet:\00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [21 x i8] c"Please enter inches:\00"
@.str.3 = [43 x i8] c" %f feet %f inches in metres is %f metres\0A\00"
@.str.4 = [8 x i8] c"Goodbye\00"
@EXIT_SUCCESS = global i32 0
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca float
%7 = alloca float
%8 = alloca float
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
br label %9
9: ; preds = %30, %2
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str, i64 0, i64 0))
%11 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %6)
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.2, i64 0, i64 0))
%13 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %7)
%14 = load float, float* %6
%15 = load float, float* %7
%16 = call float @inches2metres(float %14, float %15)
store float %16, float* %8
%17 = load float, float* %6
%18 = fpext float %17 to double
%19 = load float, float* %7
%20 = fpext float %19 to double
%21 = load float, float* %8
%22 = fpext float %21 to double
%23 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([43 x i8], [43 x i8]* @.str.3, i64 0, i64 0), double %18, double %20, double %22)
br label %24
24: ; preds = %9
%25 = load float, float* %6
%26 = fcmp ogt float %25, 0.000000e+00
br i1 %26, label %27, label %30
27: ; preds = %24
%28 = load float, float* %7
%29 = fcmp ogt float %28, 0.000000e+00
br label %30
30: ; preds = %27, %24
%31 = phi i1 [ false, %24 ], [ %29, %27 ]
br i1 %31, label %9, label %32
32: ; preds = %30
%33 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.4, i64 0, i64 0))
%34 = load i32, i32* @EXIT_SUCCESS
ret i32 %34
}

LLVM IR (-O2):
@.str = [19 x i8] c"Please enter feet:\00"
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [21 x i8] c"Please enter inches:\00"
@.str.3 = [43 x i8] c" %f feet %f inches in metres is %f metres\0A\00"
@.str.4 = [8 x i8] c"Goodbye\00"
@EXIT_SUCCESS = global i32 0
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = alloca float
%4 = alloca float
%5 = bitcast float* %3 to i8*
%6 = bitcast float* %4 to i8*
br label %7
7: ; preds = %7, %2
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([19 x i8], [19 x i8]* @.str, i64 0, i64 0))
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %3)
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @.str.2, i64 0, i64 0))
%11 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %4)
%12 = load float, float* %3
%13 = load float, float* %4
%14 = call float @inches2metres(float %12, float %13)
%15 = load float, float* %3
%16 = fpext float %15 to double
%17 = load float, float* %4
%18 = fpext float %17 to double
%19 = fpext float %14 to double
%20 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([43 x i8], [43 x i8]* @.str.3, i64 0, i64 0), double %16, double %18, double %19)
%21 = load float, float* %3
%22 = fcmp ogt float %21, 0.000000e+00
%23 = load float, float* %4
%24 = fcmp ogt float %23, 0.000000e+00
%25 = select i1 %22, i1 %24, i1 false
br i1 %25, label %7, label %26
26: ; preds = %7
%27 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @.str.4, i64 0, i64 0))
%28 = load i32, i32* @EXIT_SUCCESS
ret i32 %28
}