#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 *, unsigned int *, ...);
int main(void) {
  unsigned width, precision;
  int number = 256;
  double weight = 242.5;
  printf("Enter a field width:\n");
  scanf("%d", &width);
  printf("The number is :%*d:\n", width, number);
  printf("Now enter a width and a precision: \n");
  scanf("%d %d", &width, &precision);
  printf("Weight = %*.*f\n", width, precision, weight);
  printf("Done!\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x100,-0x10(%rbp)
movsd  0xec2(%rip),%xmm0
movsd  %xmm0,-0x18(%rbp)
lea    0xebe(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf03(%rip),%rdi
lea    -0x8(%rbp),%rsi
mov    $0x0,%al
call   1040 <scanf@plt>
mov    -0x8(%rbp),%esi
mov    -0x10(%rbp),%edx
lea    0xeae(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeb5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xecc(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
mov    $0x0,%al
call   1040 <scanf@plt>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
movsd  -0x18(%rbp),%xmm0
lea    0xeb1(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
lea    0xeb3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xef7(%rip),%rdi
call   1030 <puts@plt>
lea    0xed8(%rip),%rdi
lea    0x8(%rsp),%rbx
mov    %rbx,%rsi
xor    %eax,%eax
call   1050 <scanf@plt>
mov    0x8(%rsp),%esi
lea    0xea6(%rip),%rdi
mov    $0x100,%edx
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xed3(%rip),%rdi
call   1030 <puts@plt>
lea    0xe9c(%rip),%rdi
lea    0xc(%rsp),%rdx
mov    %rbx,%rsi
xor    %eax,%eax
call   1050 <scanf@plt>
mov    0x8(%rsp),%esi
mov    0xc(%rsp),%edx
lea    0xe84(%rip),%rdi
movsd  0xe59(%rip),%xmm0
mov    $0x1,%al
call   1040 <printf@plt>
lea    0xeb7(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [22 x i8] c"Enter a field width:\0A\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [21 x i8] c"The number is :%*d:\0A\00"
@.str.3 = [37 x i8] c"Now enter a width and a precision: \0A\00"
@.str.4 = [6 x i8] c"%d %d\00"
@.str.5 = [16 x i8] c"Weight = %*.*f\0A\00"
@.str.6 = [7 x i8] c"Done!\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca double
store i32 0, i32* %1
store i32 256, i32* %4
store double 2.425000e+02, double* %5
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
%7 = call i32 (i8*, i32*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%8 = load i32, i32* %2
%9 = load i32, i32* %4
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.2, i64 0, i64 0), i32 %8, i32 %9)
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.3, i64 0, i64 0))
%12 = call i32 (i8*, i32*, ...) @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.4, i64 0, i64 0), i32* %2, i32* %3)
%13 = load i32, i32* %2
%14 = load i32, i32* %3
%15 = load double, double* %5
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.5, i64 0, i64 0), i32 %13, i32 %14, double %15)
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.6, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [21 x i8] c"The number is :%*d:\0A\00"
@.str.4 = [6 x i8] c"%d %d\00"
@.str.5 = [16 x i8] c"Weight = %*.*f\0A\00"
@str = [21 x i8] c"Enter a field width:\00"
@str.7 = [36 x i8] c"Now enter a width and a precision: \00"
@str.8 = [6 x i8] c"Done!\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
%4 = bitcast i32* %2 to i8*
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @str, i64 0, i64 0))
%6 = call i32 (i8*, i32*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%7 = load i32, i32* %1
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @.str.2, i64 0, i64 0), i32 %7, i32 256)
%9 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([36 x i8], [36 x i8]* @str.7, i64 0, i64 0))
%10 = call i32 (i8*, i32*, ...) @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.4, i64 0, i64 0), i32* %1, i32* %2)
%11 = load i32, i32* %1
%12 = load i32, i32* %2
%13 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.5, i64 0, i64 0), i32 %11, i32 %12, double 2.425000e+02)
%14 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @str.8, i64 0, i64 0))
ret i32 0
}