#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 *, int *, char *);
int main(int argc, char **argv) {
  int a = 0;
  int b = 0;
  int c = 0;
  char d = '\0';
  printf("Enter some values: \n");
  scanf("%d%d%d %c", &a, &b, &c, &d);
  printf("a = %d\nb = %d\nc = %d\nd = %c\n", a, b, c, d);
  return 0;
}


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)
movl   $0x0,-0x14(%rbp)
movl   $0x0,-0x18(%rbp)
movl   $0x0,-0x1c(%rbp)
movb   $0x0,-0x1d(%rbp)
lea    0xeaa(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeb1(%rip),%rdi
lea    -0x14(%rbp),%rsi
lea    -0x18(%rbp),%rdx
lea    -0x1c(%rbp),%rcx
lea    -0x1d(%rbp),%r8
call   1040 <scanf@plt>
mov    -0x14(%rbp),%esi
mov    -0x18(%rbp),%edx
mov    -0x1c(%rbp),%ecx
movsbl -0x1d(%rbp),%r8d
lea    0xe91(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x18,%rsp
movl   $0x0,0x14(%rsp)
movl   $0x0,0x10(%rsp)
movl   $0x0,0xc(%rsp)
movb   $0x0,0xb(%rsp)
lea    0xecf(%rip),%rdi
call   1030 <puts@plt>
lea    0xe9c(%rip),%rdi
lea    0x14(%rsp),%rsi
lea    0x10(%rsp),%rdx
lea    0xc(%rsp),%rcx
lea    0xb(%rsp),%r8
call   1050 <scanf@plt>
mov    0x14(%rsp),%esi
mov    0x10(%rsp),%edx
mov    0xc(%rsp),%ecx
movsbl 0xb(%rsp),%r8d
lea    0xe74(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x18,%rsp
ret

LLVM IR (-O0):
@.str = [21 x i8] c"Enter some values: \0A\00"
@.str.1 = [10 x i8] c"%d%d%d %c\00"
@.str.2 = [29 x i8] c"a = %d\0Ab = %d\0Ac = %d\0Ad = %c\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i32
%8 = alloca i32
%9 = alloca i8
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
store i32 0, i32* %6
store i32 0, i32* %7
store i32 0, i32* %8
store i8 0, i8* %9
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0))
%11 = call i32 @scanf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i32* %6, i32* %7, i32* %8, i8* %9)
%12 = load i32, i32* %6
%13 = load i32, i32* %7
%14 = load i32, i32* %8
%15 = load i8, i8* %9
%16 = sext i8 %15 to i32
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.2, i64 0, i64 0), i32 %12, i32 %13, i32 %14, i32 %16)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [10 x i8] c"%d%d%d %c\00"
@.str.2 = [29 x i8] c"a = %d\0Ab = %d\0Ac = %d\0Ad = %c\0A\00"
@str = [20 x i8] c"Enter some values: \00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
%6 = alloca i8
%7 = bitcast i32* %3 to i8*
store i32 0, i32* %3
%8 = bitcast i32* %4 to i8*
store i32 0, i32* %4
%9 = bitcast i32* %5 to i8*
store i32 0, i32* %5
store i8 0, i8* %6
%10 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @str, i64 0, i64 0))
%11 = call i32 @scanf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i32* %3, i32* %4, i32* %5, i8* %6)
%12 = load i32, i32* %3
%13 = load i32, i32* %4
%14 = load i32, i32* %5
%15 = load i8, i8* %6
%16 = sext i8 %15 to i32
%17 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 x i8]* @.str.2, i64 0, i64 0), i32 %12, i32 %13, i32 %14, i32 %16)
ret i32 0
}