#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*/ readFileFromPath(char *);
int /*<<< orphan*/ scanf(char *, char *);
int main(int argc, const char *argv[]) {
  printf("input your file name\n");
  char filename[100];
  scanf("%s", filename);
  printf("filename == %s\n", filename);
  readFileFromPath("/Users/fenglin/Documents/C语言/C/C003/C003/main/2.txt");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x80,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
lea    0xeb0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    -0x80(%rbp),%rsi
lea    0xeb4(%rip),%rdi
call   1040 <scanf@plt>
lea    -0x80(%rbp),%rsi
lea    0xea7(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xea9(%rip),%rdi
call   1050 <readFileFromPath@plt>
xor    %eax,%eax
add    $0x80,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x70,%rsp
lea    0xeff(%rip),%rdi
call   1030 <puts@plt>
lea    0xea8(%rip),%rdi
mov    %rsp,%rbx
mov    %rbx,%rsi
call   1050 <scanf@plt>
lea    0xe99(%rip),%rdi
mov    %rbx,%rsi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xe98(%rip),%rdi
call   1060 <readFileFromPath@plt>
xor    %eax,%eax
add    $0x70,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [22 x i8] c"input your file name\0A\00"
@.str.1 = [3 x i8] c"%s\00"
@.str.2 = [16 x i8] c"filename == %s\0A\00"
@.str.3 = [56 x i8] c"/Users/fenglin/Documents/C\E8\AF\AD\E8\A8\80/C/C003/C003/main/2.txt\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca [100 x i8]
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
%8 = getelementptr inbounds [100 x i8], [100 x i8]* %6, 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 [100 x i8], [100 x i8]* %6, i64 0, i64 0
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0), i8* %10)
%12 = call i32 @readFileFromPath(i8* getelementptr inbounds ([56 x i8], [56 x i8]* @.str.3, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%s\00"
@.str.2 = [16 x i8] c"filename == %s\0A\00"
@.str.3 = [56 x i8] c"/Users/fenglin/Documents/C\E8\AF\AD\E8\A8\80/C/C003/C003/main/2.txt\00"
@str = [21 x i8] c"input your file name\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = alloca [100 x i8]
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @str, i64 0, i64 0))
%5 = getelementptr inbounds [100 x i8], [100 x i8]* %3, 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* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0), i8* %5)
%8 = call i32 @readFileFromPath(i8* getelementptr inbounds ([56 x i8], [56 x i8]* @.str.3, i64 0, i64 0))
ret i32 0
}