#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 */
char *multiply(char *, char *);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, char *);
int main() {
  char a[10000];
  char b[10000];
  char *c;
  int la, lb;
  int i;
  printf("Enter the first number : ");
  scanf("%s", a);
  printf("Enter the second number : ");
  scanf("%s", b);
  printf("Multiplication of two numbers : ");
  c = multiply(a, b);
  printf("%s", c);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x4e50,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeb7(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    -0x2720(%rbp),%rsi
lea    0xebc(%rip),%rdi
call   1050 <scanf@plt>
lea    0xeb3(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    -0x4e30(%rbp),%rsi
lea    0xe9b(%rip),%rdi
call   1050 <scanf@plt>
lea    0xead(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    -0x2720(%rbp),%rdi
lea    -0x4e30(%rbp),%rsi
call   1030 <multiply@plt>
mov    %rax,-0x4e38(%rbp)
mov    -0x4e38(%rbp),%rsi
lea    0xe60(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x4e50,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
sub    $0x4e20,%rsp
lea    0xebd(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xec9(%rip),%r15
lea    0x2710(%rsp),%r14
mov    %r15,%rdi
mov    %r14,%rsi
call   1050 <scanf@plt>
lea    0xeb2(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rsp,%rbx
mov    %r15,%rdi
mov    %rbx,%rsi
call   1050 <scanf@plt>
lea    0xeb1(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r14,%rdi
mov    %rbx,%rsi
call   1030 <multiply@plt>
mov    %r15,%rdi
mov    %rax,%rsi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x4e20,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [26 x i8] c"Enter the first number : \00"
@.str.1 = [3 x i8] c"%s\00"
@.str.2 = [27 x i8] c"Enter the second number : \00"
@.str.3 = [33 x i8] c"Multiplication of two numbers : \00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [10000 x i8]
%3 = alloca [10000 x i8]
%4 = alloca i8*
%5 = alloca i32
%6 = alloca i32
%7 = alloca i32
store i32 0, i32* %1
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0))
%9 = getelementptr inbounds [10000 x i8], [10000 x i8]* %2, i64 0, i64 0
%10 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %9)
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.2, i64 0, i64 0))
%12 = getelementptr inbounds [10000 x i8], [10000 x i8]* %3, i64 0, i64 0
%13 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %12)
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str.3, i64 0, i64 0))
%15 = getelementptr inbounds [10000 x i8], [10000 x i8]* %2, i64 0, i64 0
%16 = getelementptr inbounds [10000 x i8], [10000 x i8]* %3, i64 0, i64 0
%17 = call i8* @multiply(i8* %15, i8* %16)
store i8* %17, i8** %4
%18 = load i8*, i8** %4
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %18)
ret i32 0
}

LLVM IR (-O2):
@.str = [26 x i8] c"Enter the first number : \00"
@.str.1 = [3 x i8] c"%s\00"
@.str.2 = [27 x i8] c"Enter the second number : \00"
@.str.3 = [33 x i8] c"Multiplication of two numbers : \00"
define i32 @main() {
%1 = alloca [10000 x i8]
%2 = alloca [10000 x i8]
%3 = getelementptr inbounds [10000 x i8], [10000 x i8]* %1, i64 0, i64 0
%4 = getelementptr inbounds [10000 x i8], [10000 x i8]* %2, i64 0, i64 0
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %3)
%7 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([27 x i8], [27 x i8]* @.str.2, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %4)
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([33 x i8], [33 x i8]* @.str.3, i64 0, i64 0))
%10 = call i8* @multiply(i8* %3, i8* %4)
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %10)
ret i32 0
}