#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 */
typedef int /*<<< orphan*/ FILE;

/* Variables and functions */
int /*<<< orphan*/ SEEK_SET;
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fputs(char *, int /*<<< orphan*/ *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, int, int /*<<< orphan*/);
int main() {
  FILE *fp;
  fp = fopen("file.txt", "w+");
  fputs("This is yiibai.com", fp);
  fseek(fp, 7, SEEK_SET);
  fputs(" C Programming Langauge", fp);
  fclose(fp);
  return (0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeaa(%rip),%rdi
lea    0xeac(%rip),%rsi
call   1060 <fopen@plt>
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rsi
lea    0xe9b(%rip),%rdi
call   1040 <fputs@plt>
mov    -0x10(%rbp),%rdi
mov    0x2e5f(%rip),%rax
mov    (%rax),%edx
mov    $0x7,%esi
call   1050 <fseek@plt>
mov    -0x10(%rbp),%rsi
lea    0xe87(%rip),%rdi
call   1040 <fputs@plt>
mov    -0x10(%rbp),%rdi
call   1030 <fclose@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xeb8(%rip),%rdi
lea    0xeba(%rip),%rsi
call   1050 <fopen@plt>
mov    %rax,%rbx
lea    0xeae(%rip),%rdi
mov    $0x12,%esi
mov    $0x1,%edx
mov    %rax,%rcx
call   1060 <fwrite@plt>
mov    0x2e69(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
mov    $0x7,%esi
call   1040 <fseek@plt>
lea    0xe92(%rip),%rdi
mov    $0x17,%esi
mov    $0x1,%edx
mov    %rbx,%rcx
call   1060 <fwrite@plt>
mov    %rbx,%rdi
call   1030 <fclose@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [9 x i8] c"file.txt\00"
@.str.1 = [3 x i8] c"w+\00"
@.str.2 = [19 x i8] c"This is yiibai.com\00"
@SEEK_SET = global i32 0
@.str.3 = [24 x i8] c" C Programming Langauge\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32*
store i32 0, i32* %1
%3 = call i32* @fopen(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
store i32* %3, i32** %2
%4 = load i32*, i32** %2
%5 = call i32 @fputs(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0), i32* %4)
%6 = load i32*, i32** %2
%7 = load i32, i32* @SEEK_SET
%8 = call i32 @fseek(i32* %6, i32 7, i32 %7)
%9 = load i32*, i32** %2
%10 = call i32 @fputs(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0), i32* %9)
%11 = load i32*, i32** %2
%12 = call i32 @fclose(i32* %11)
ret i32 0
}

LLVM IR (-O2):
@.str = [9 x i8] c"file.txt\00"
@.str.1 = [3 x i8] c"w+\00"
@.str.2 = [19 x i8] c"This is yiibai.com\00"
@SEEK_SET = global i32 0
@.str.3 = [24 x i8] c" C Programming Langauge\00"
define i32 @main() {
%1 = tail call i32* @fopen(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%2 = tail call i64 @fwrite(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0), i64 18, i64 1, i32* %1)
%3 = load i32, i32* @SEEK_SET
%4 = tail call i32 @fseek(i32* %1, i32 7, i32 %3)
%5 = tail call i64 @fwrite(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0), i64 23, i64 1, i32* %1)
%6 = tail call i32 @fclose(i32* %1)
ret i32 0
}