#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*/ delcharfun(char *, char);
int /*<<< orphan*/ fflush(int /*<<< orphan*/);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, char *);
int /*<<< orphan*/ stdin;
int main() {
  char str[100], ch;
  printf("Please input the string:");
  scanf("%s", str);
  fflush(stdin);
  printf("Please input the letter you want to delete:");
  scanf("%c", &ch);
  delcharfun(str, ch);
  printf("The result is:%s\n", str);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x80,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xea7(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    -0x70(%rbp),%rsi
lea    0xeae(%rip),%rdi
call   1060 <scanf@plt>
mov    0x2e71(%rip),%rax
mov    (%rax),%edi
call   1050 <fflush@plt>
lea    0xe97(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xeb5(%rip),%rdi
lea    -0x71(%rbp),%rsi
call   1060 <scanf@plt>
lea    -0x70(%rbp),%rdi
movsbl -0x71(%rbp),%esi
call   1030 <delcharfun@plt>
lea    -0x70(%rbp),%rsi
lea    0xe97(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x80,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x80,%rsp
lea    0xeb1(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xebc(%rip),%rdi
lea    0x10(%rsp),%rbx
mov    %rbx,%rsi
call   1060 <scanf@plt>
mov    0x2e77(%rip),%rax
mov    (%rax),%edi
call   1050 <fflush@plt>
lea    0xe9d(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xebb(%rip),%rdi
lea    0xf(%rsp),%rsi
call   1060 <scanf@plt>
movsbl 0xf(%rsp),%esi
mov    %rbx,%rdi
call   1030 <delcharfun@plt>
lea    0xea0(%rip),%rdi
mov    %rbx,%rsi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x80,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [25 x i8] c"Please input the string:\00"
@.str.1 = [3 x i8] c"%s\00"
@stdin = global i32 0
@.str.2 = [44 x i8] c"Please input the letter you want to delete:\00"
@.str.3 = [3 x i8] c"%c\00"
@.str.4 = [18 x i8] c"The result is:%s\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [100 x i8]
%3 = alloca 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 [100 x i8], [100 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 = load i32, i32* @stdin
%8 = call i32 @fflush(i32 %7)
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str.2, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i8* %3)
%11 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%12 = load i8, i8* %3
%13 = call i32 @delcharfun(i8* %11, i8 signext %12)
%14 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.4, i64 0, i64 0), i8* %14)
ret i32 0
}

LLVM IR (-O2):
@.str = [25 x i8] c"Please input the string:\00"
@.str.1 = [3 x i8] c"%s\00"
@stdin = global i32 0
@.str.2 = [44 x i8] c"Please input the letter you want to delete:\00"
@.str.3 = [3 x i8] c"%c\00"
@.str.4 = [18 x i8] c"The result is:%s\0A\00"
define i32 @main() {
%1 = alloca [100 x i8]
%2 = alloca i8
%3 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %3)
%6 = load i32, i32* @stdin
%7 = call i32 @fflush(i32 %6)
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([44 x i8], [44 x i8]* @.str.2, i64 0, i64 0))
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i8* %2)
%10 = load i8, i8* %2
%11 = call i32 @delcharfun(i8* %3, i8 signext %10)
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @.str.4, i64 0, i64 0), i8* %3)
ret i32 0
}