#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 *, ...);
void main() {
  int C;
  int F;
  printf("the temperature from C to F\n");
  printf("C        F\n");
  for (C = 0; C <= 300; C = C + 20) {
    F = C * 9 / 5 + 32;
    printf("%-8d%d\n", C, F);
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xee1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xef0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x4(%rbp)
cmpl   $0x12c,-0x4(%rbp)
jg     117c <main+0x6c>
imul   $0x9,-0x4(%rbp),%eax
mov    $0x5,%ecx
cltd
idiv   %ecx
add    $0x20,%eax
mov    %eax,-0x8(%rbp)
mov    -0x4(%rbp),%esi
mov    -0x8(%rbp),%edx
lea    0xec2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x14,%eax
mov    %eax,-0x4(%rbp)
jmp    113b <main+0x2b>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r14
push   %rbx
lea    0xedd(%rip),%rdi
call   1030 <puts@plt>
lea    0xeed(%rip),%rdi
call   1030 <puts@plt>
mov    $0xffffffec,%ebx
mov    $0x20,%ebp
lea    0xeb3(%rip),%r14
nopl   (%rax)
add    $0x14,%ebx
mov    %r14,%rdi
mov    %ebx,%esi
mov    %ebp,%edx
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x24,%ebp
cmp    $0x119,%ebx
jb     1150 <main+0x30>
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
@.str = [29 x i8] c"the temperature from C to F\0A\00"
@.str.1 = [12 x i8] c"C F\0A\00"
@.str.2 = [8 x i8] c"%-8d%d\0A\00"
define void @main() {
%1 = alloca i32
%2 = alloca i32
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str, i64 0, i64 0))
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0))
store i32 0, i32* %1
br label %5
5: ; preds = %16, %0
%6 = load i32, i32* %1
%7 = icmp sle i32 %6, 300
br i1 %7, label %8, label %19
8: ; preds = %5
%9 = load i32, i32* %1
%10 = mul nsw i32 %9, 9
%11 = sdiv i32 %10, 5
%12 = add nsw i32 %11, 32
store i32 %12, i32* %2
%13 = load i32, i32* %1
%14 = load i32, i32* %2
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0), i32 %13, i32 %14)
br label %16
16: ; preds = %8
%17 = load i32, i32* %1
%18 = add nsw i32 %17, 20
store i32 %18, i32* %1
br label %5
19: ; preds = %5
ret void
}

LLVM IR (-O2):
@.str.2 = [8 x i8] c"%-8d%d\0A\00"
@str = [28 x i8] c"the temperature from C to F\00"
@str.3 = [11 x i8] c"C F\00"
define void @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([28 x i8], [28 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str.3, i64 0, i64 0))
br label %3
3: ; preds = %0, %3
%4 = phi i32 [ 0, %0 ], [ %11, %3 ]
%5 = trunc i32 %4 to i16
%6 = mul nuw nsw i16 %5, 9
%7 = udiv i16 %6, 5
%8 = add nuw nsw i16 %7, 32
%9 = zext i16 %8 to i32
%10 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0), i32 %4, i32 %9)
%11 = add nuw nsw i32 %4, 20
%12 = icmp ult i32 %4, 281
br i1 %12, label %3, label %13
13: ; preds = %3
ret void
}