#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 *, int *);
int main(void) {
  int number = 0;
  printf("Give a number:");
  scanf("%i", &number);
  while (number <= 0) {
    printf("The number must be > 0\n");
    printf("Give a new number: ");
    scanf("%i", &number);
  }
  printf("The number is: %i\n", number);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
lea    0xec3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec4(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
cmpl   $0x0,-0x8(%rbp)
jg     118f <main+0x6f>
lea    0xead(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeb7(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe8e(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
jmp    1154 <main+0x34>
mov    -0x8(%rbp),%esi
lea    0xea5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
movl   $0x0,0x4(%rsp)
lea    0xeb9(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xeba(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%esi
test   %esi,%esi
jg     11b5 <main+0x85>
lea    0xecb(%rip),%r14
lea    0xe9d(%rip),%r15
lea    0xe93(%rip),%r12
lea    0x4(%rsp),%rbx
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
mov    %r14,%rdi
call   1030 <puts@plt>
mov    %r15,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r12,%rdi
mov    %rbx,%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%esi
test   %esi,%esi
jle    1190 <main+0x60>
lea    0xe6a(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [15 x i8] c"Give a number:\00"
@.str.1 = [3 x i8] c"%i\00"
@.str.2 = [24 x i8] c"The number must be > 0\0A\00"
@.str.3 = [20 x i8] c"Give a new number: \00"
@.str.4 = [19 x i8] c"The number is: %i\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
br label %5
5: ; preds = %8, %0
%6 = load i32, i32* %2
%7 = icmp sle i32 %6, 0
br i1 %7, label %8, label %12
8: ; preds = %5
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.2, i64 0, i64 0))
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.3, i64 0, i64 0))
%11 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
br label %5
12: ; preds = %5
%13 = load i32, i32* %2
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.4, i64 0, i64 0), i32 %13)
ret i32 0
}

LLVM IR (-O2):
@.str = [15 x i8] c"Give a number:\00"
@.str.1 = [3 x i8] c"%i\00"
@.str.3 = [20 x i8] c"Give a new number: \00"
@.str.4 = [19 x i8] c"The number is: %i\0A\00"
@str = [23 x i8] c"The number must be > 0\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
store i32 0, i32* %1
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = icmp slt i32 %5, 1
br i1 %6, label %7, label %13
7: ; preds = %0, %7
%8 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @str, i64 0, i64 0))
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 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), i32* %1)
%11 = load i32, i32* %1
%12 = icmp slt i32 %11, 1
br i1 %12, label %7, label %13
13: ; preds = %7, %0
%14 = phi i32 [ %5, %0 ], [ %11, %7 ]
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([19 x i8], [19 x i8]* @.str.4, i64 0, i64 0), i32 %14)
ret i32 0
}