#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 count_spaces(char *);
int /*<<< orphan*/ print_line(char *, int);
int /*<<< orphan*/ printf(char *, ...);
int read_line(char *, int);
int main(void) {
  char str[50];
  int n, count;
  printf("enter the sentence: ");
  n = read_line(str, 50);
  print_line(str, n);
  count = count_spaces(str);
  printf("count: %d\n", count);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x50,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeaa(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    -0x40(%rbp),%rdi
mov    $0x32,%esi
call   1060 <read_line@plt>
mov    %eax,-0x44(%rbp)
lea    -0x40(%rbp),%rdi
mov    -0x44(%rbp),%esi
call   1030 <print_line@plt>
lea    -0x40(%rbp),%rdi
call   1050 <count_spaces@plt>
mov    %eax,-0x48(%rbp)
mov    -0x48(%rbp),%esi
lea    0xe85(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x50,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x40,%rsp
lea    0xeb4(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rsp,%rbx
mov    %rbx,%rdi
mov    $0x32,%esi
call   1060 <read_line@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1030 <print_line@plt>
mov    %rbx,%rdi
call   1050 <count_spaces@plt>
lea    0xe99(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x40,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [21 x i8] c"enter the sentence: \00"
@.str.1 = [11 x i8] c"count: %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [50 x i8]
%3 = alloca i32
%4 = alloca i32
store i32 0, i32* %1
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0))
%6 = getelementptr inbounds [50 x i8], [50 x i8]* %2, i64 0, i64 0
%7 = call i32 @read_line(i8* %6, i32 50)
store i32 %7, i32* %3
%8 = getelementptr inbounds [50 x i8], [50 x i8]* %2, i64 0, i64 0
%9 = load i32, i32* %3
%10 = call i32 @print_line(i8* %8, i32 %9)
%11 = getelementptr inbounds [50 x i8], [50 x i8]* %2, i64 0, i64 0
%12 = call i32 @count_spaces(i8* %11)
store i32 %12, i32* %4
%13 = load i32, i32* %4
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 %13)
ret i32 0
}

LLVM IR (-O2):
@.str = [21 x i8] c"enter the sentence: \00"
@.str.1 = [11 x i8] c"count: %d\0A\00"
define i32 @main() {
%1 = alloca [50 x i8]
%2 = getelementptr inbounds [50 x i8], [50 x i8]* %1, i64 0, i64 0
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @read_line(i8* %2, i32 50)
%5 = call i32 @print_line(i8* %2, i32 %4)
%6 = call i32 @count_spaces(i8* %2)
%7 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 %6)
ret i32 0
}