#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 *, char *);
char toupper(char);
int main(void) {
  char fname[20], lname[30];
  printf("Enter Your first name : ");
  scanf("%s", fname);
  printf("\nEnter Your Last name : ");
  scanf("%s", lname);
  fname[0] = toupper(fname[0]);
  lname[0] = toupper(lname[0]);
  printf("\nYour name is now fixed and entered to database as : %s %s", fname,
         lname);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x40,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    -0x20(%rbp),%rsi
lea    0xf12(%rip),%rdi
call   1050 <scanf@plt>
lea    0xeb5(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    -0x40(%rbp),%rsi
lea    0xef4(%rip),%rdi
call   1050 <scanf@plt>
movsbl -0x20(%rbp),%edi
call   1030 <toupper@plt>
mov    %al,-0x20(%rbp)
movsbl -0x40(%rbp),%edi
call   1030 <toupper@plt>
mov    %al,-0x40(%rbp)
lea    -0x20(%rbp),%rsi
lea    -0x40(%rbp),%rdx
lea    0xe90(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x40,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
sub    $0x40,%rsp
lea    0xec0(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xf1c(%rip),%rbx
mov    %rsp,%r14
mov    %rbx,%rdi
mov    %r14,%rsi
call   1050 <scanf@plt>
lea    0xeb6(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0x20(%rsp),%r15
mov    %rbx,%rdi
mov    %r15,%rsi
call   1050 <scanf@plt>
movsbl (%rsp),%edi
call   1030 <toupper@plt>
mov    %al,(%rsp)
movsbl 0x20(%rsp),%edi
call   1030 <toupper@plt>
mov    %al,0x20(%rsp)
lea    0xe97(%rip),%rdi
mov    %r14,%rsi
mov    %r15,%rdx
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x40,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [25 x i8] c"Enter Your first name : \00"
@.str.1 = [3 x i8] c"%s\00"
@.str.2 = [25 x i8] c"\0AEnter Your Last name : \00"
@.str.3 = [59 x i8] c"\0AYour name is now fixed and entered to database as : %s %s\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [20 x i8]
%3 = alloca [30 x i8]
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%5 = getelementptr inbounds [20 x i8], [20 x i8]* %2, i64 0, i64 0
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %5)
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.2, i64 0, i64 0))
%8 = getelementptr inbounds [30 x i8], [30 x i8]* %3, i64 0, i64 0
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %8)
%10 = getelementptr inbounds [20 x i8], [20 x i8]* %2, i64 0, i64 0
%11 = load i8, i8* %10
%12 = call signext i8 @toupper(i8 signext %11)
%13 = getelementptr inbounds [20 x i8], [20 x i8]* %2, i64 0, i64 0
store i8 %12, i8* %13
%14 = getelementptr inbounds [30 x i8], [30 x i8]* %3, i64 0, i64 0
%15 = load i8, i8* %14
%16 = call signext i8 @toupper(i8 signext %15)
%17 = getelementptr inbounds [30 x i8], [30 x i8]* %3, i64 0, i64 0
store i8 %16, i8* %17
%18 = getelementptr inbounds [20 x i8], [20 x i8]* %2, i64 0, i64 0
%19 = getelementptr inbounds [30 x i8], [30 x i8]* %3, i64 0, i64 0
%20 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([59 x i8], [59 x i8]* @.str.3, i64 0, i64 0), i8* %18, i8* %19)
ret i32 0
}

LLVM IR (-O2):
@.str = [25 x i8] c"Enter Your first name : \00"
@.str.1 = [3 x i8] c"%s\00"
@.str.2 = [25 x i8] c"\0AEnter Your Last name : \00"
@.str.3 = [59 x i8] c"\0AYour name is now fixed and entered to database as : %s %s\00"
define i32 @main() {
%1 = alloca [20 x i8]
%2 = alloca [30 x i8]
%3 = getelementptr inbounds [20 x i8], [20 x i8]* %1, i64 0, i64 0
%4 = getelementptr inbounds [30 x i8], [30 x i8]* %2, i64 0, i64 0
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 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 ([25 x i8], [25 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 = load i8, i8* %3
%10 = call signext i8 @toupper(i8 signext %9)
store i8 %10, i8* %3
%11 = load i8, i8* %4
%12 = call signext i8 @toupper(i8 signext %11)
store i8 %12, i8* %4
%13 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([59 x i8], [59 x i8]* @.str.3, i64 0, i64 0), i8* %3, i8* %4)
ret i32 0
}