#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*/ clrscr();
int /*<<< orphan*/ getch();
int /*<<< orphan*/ gets(char *);
int /*<<< orphan*/ puts(char *);
int /*<<< orphan*/ toPrefix(char *, char *);
main() {
  char infix[100], prefix[100];
  clrscr();
  puts("Enter the Valid Infix Expression : Use A ... Z for operands\n and + - "
       "* / ^ operators ");
  gets(infix);
  toPrefix(infix, prefix);
  puts("The Prefix expression is ");
  puts(prefix);
  getch();
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0xe0,%rsp
mov    $0x0,%al
call   1030 <clrscr@plt>
lea    0xe97(%rip),%rdi
call   1040 <puts@plt>
lea    -0x70(%rbp),%rdi
call   1050 <gets@plt>
lea    -0x70(%rbp),%rdi
lea    -0xe0(%rbp),%rsi
call   1060 <toPrefix@plt>
lea    0xec8(%rip),%rdi
call   1040 <puts@plt>
lea    -0xe0(%rbp),%rdi
call   1040 <puts@plt>
mov    $0x0,%al
call   1070 <getch@plt>
xor    %eax,%eax
add    $0xe0,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
sub    $0xd8,%rsp
xor    %eax,%eax
call   1030 <clrscr@plt>
lea    0xe98(%rip),%rdi
call   1040 <puts@plt>
lea    0x70(%rsp),%rbx
mov    %rbx,%rdi
call   1050 <gets@plt>
mov    %rsp,%r14
mov    %rbx,%rdi
mov    %r14,%rsi
call   1060 <toPrefix@plt>
lea    0xec7(%rip),%rdi
call   1040 <puts@plt>
mov    %r14,%rdi
call   1040 <puts@plt>
xor    %eax,%eax
call   1070 <getch@plt>
xor    %eax,%eax
add    $0xd8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [86 x i8] c"Enter the Valid Infix Expression : Use A ... Z for operands\0A and + - * / ^ operators \00"
@.str.1 = [26 x i8] c"The Prefix expression is \00"
define i32 @main() {
%1 = alloca [100 x i8]
%2 = alloca [100 x i8]
%3 = call i32 (...) @clrscr()
%4 = call i32 @puts(i8* getelementptr inbounds ([86 x i8], [86 x i8]* @.str, i64 0, i64 0))
%5 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%6 = call i32 @gets(i8* %5)
%7 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%8 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%9 = call i32 @toPrefix(i8* %7, i8* %8)
%10 = call i32 @puts(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.1, i64 0, i64 0))
%11 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%12 = call i32 @puts(i8* %11)
%13 = call i32 (...) @getch()
ret i32 0
}

LLVM IR (-O2):
@.str = [86 x i8] c"Enter the Valid Infix Expression : Use A ... Z for operands\0A and + - * / ^ operators \00"
@.str.1 = [26 x i8] c"The Prefix expression is \00"
define i32 @main() {
%1 = alloca [100 x i8]
%2 = alloca [100 x i8]
%3 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%4 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%5 = tail call i32 (...) @clrscr()
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([86 x i8], [86 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @gets(i8* %3)
%8 = call i32 @toPrefix(i8* %3, i8* %4)
%9 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @.str.1, i64 0, i64 0))
%10 = call i32 @puts(i8* %4)
%11 = call i32 (...) @getch()
ret i32 0
}