Language: C++

##includeinclude  <iostream><iostream>
 ##includeinclude  <algorithm><algorithm>
#include <stdio.h>
#include <string.h>
using namespace std;
int main()
{
    int n,l,i,j;
    char a[105][105];
    scanf("%d %d",&n,&l);
    for(i = 0; i<n; i++)
        scanf("%s",&a[i]);
    for(i =0; i<n-1; i++)
    {
        for(j = i+1;j<n;j++)
        {
            if(a[i][0]>a[j][0])
            {
                char t[105];
                strcpy(t,a[i]);
                strcpy(a[i],a[j]);
                strcpy(a[j],t);
            }
        }
    }
    for(i = 0;i<n;i++)
    {
        printf("%s",a[i]);
    }
    printf("\n");
    return 0;
}

Compiler output:
a.cc:1:1: error: stray '##' in program
    1 | ##includeinclude  <iostream><iostream>
      | ^~
a.cc:2:2: error: stray '##' in program
    2 |  ##includeinclude  <algorithm><algorithm>
      |  ^~
a.cc:1:3: error: 'includeinclude' does not name a type
    1 | ##includeinclude  <iostream><iostream>
      |   ^~~~~~~~~~~~~~
In file included from a.cc:4:
/usr/include/string.h:44:22: error: 'size_t' has not been declared
   44 |                      size_t __n) __THROW __nonnull ((1, 2));
      |                      ^~~~~~
/usr/include/string.h:47:56: error: 'size_t' has not been declared
   47 | extern void *memmove (void *__dest, const void *__src, size_t __n)
      |                                                        ^~~~~~
/usr/include/string.h:55:32: error: 'size_t' has not been declared
   55 |                       int __c, size_t __n)
      |                                ^~~~~~
/usr/include/string.h:61:42: error: 'size_t' has not been declared
   61 | extern void *memset (void *__s, int __c, size_t __n) __THROW __nonnull ((1));
      |                                          ^~~~~~
/usr/include/string.h:64:56: error: 'size_t' has not been declared
   64 | extern int memcmp (const void *__s1, const void *__s2, size_t __n)
      |                                                        ^~~~~~
/usr/include/string.h:80:60: error: 'size_t' has not been declared
   80 | extern int __memcmpeq (const void *__s1, const void *__s2, size_t __n)
      |                                                            ^~~~~~
/usr/include/string.h:87:42: error: 'size_t' has not been declared
   87 | extern void *memchr (void *__s, int __c, size_t __n)
      |                                          ^~~~~~
/usr/include/string.h:89:54: error: 'size_t' has not been declared
   89 | extern const void *memchr (const void *__s, int __c, size_t __n)
      |                                                      ^~~~~~
/usr/include/string.h:126:49: error: 'size_t' has not been declared
  126 | extern "C++" void *memrchr (void *__s, int __c, size_t __n)
      |                                                 ^~~~~~
/usr/include/string.h:129:61: error: 'size_t' has not been declared
  129 | extern "C++" const void *memrchr (const void *__s, int __c, size_t __n)
      |                                                             ^~~~~~
/usr/include/string.h:145:53: error: 'size_t' has not been declared
  145 |                       const char *__restrict __src, size_t __n)
      |                                                     ^~~~~~
/usr/include/string.h:153:23: error: 'size_t' has not been declared
  153 |                       size_t __n) __THROW __nonnull ((1, 2));
      |                       ^~~~~~
/usr/include/string.h:159:57: error: 'size_t' has not been declared
  159 | extern int strncmp (const char *__s1, const char *__s2, size_t __n)
      |                                                         ^~~~~~
/usr/include/string.h:166:8: error: 'size_t' does not name a type
  166 | extern size_t strxfrm (char *__restrict __dest,
      |        ^~~~~~
/usr/include/string.h:34:1: note: 'size_t' is defined in header '<cstddef>'; this is probably fixable by adding '#include <cstddef>'
   33 | #include <stddef.h>
  +++ |+#include <cstddef>
   34 | 
/usr/include/string.h:179:8: error: 'size_t' does not name a type
  179 | extern size_t strxfrm_l (char *__dest, const char *__src, size_t __n,
      |        ^~~~~~
/usr/include/string.h:179:8: note: 'size_t' is defined in header '<cstddef>'; this is probably fixable by adding '#include <cstddef>'
/usr/include/string.h:195:45: error: 'size_t' has not been declared
  195 | extern char *strndup (const char *__string, size_t __n)
      |                                             ^~~~~~
/usr/include/string.h:293:8: error: 'size_t' does not name a type
  293 | extern size_t strcspn (const char *__s, const char *__reject)
      |        ^~~~~~
/usr/include/string.h:293:8: note: 'size_t' is defined in header '<cstddef>'; this is probably fixable by adding '#include <cstddef>'
/usr/include/string.h:297:8: error: 'size_t' does not name a type
  297 | extern size_t strspn (const char *__s, const char *__accept)
      |        ^~~~~~
/usr/include/string.h:297:8: note: 'size_t' is defined in header '<cstddef>'; this is probably fixable by adding '#include <cstddef>'
/usr/include/string.h:389:46: error: 'size_t' has not been declared
  389 | extern void *memmem (const void *__haystack, size_t __haystacklen,
      |                                              ^~~~~~
/usr/include/string.h:390:44: error: 'size_t' has not been declared
  390 |                      const void *__needle, size_t __needlelen)
      |                                            ^~~~~~
/usr/include/string.h:398:55: error: 'size_t' has not been declared
  398 |                         const void *__restrict __src, size_t __n)
      |                                                       ^~~~~~
/usr/include/string.h:401:53: error: 'size_t' has not been declared
  401 |                       const void *__restrict __src, size_t __n)
      |                                                     ^~~~~~
/usr/include/string.h:407:8: error: 'size_t' does not name a type
  407 | extern size_t strlen (const char *__s)
      |        ^~~~~~
/usr/include/string.h:407:8: note: 'size_t' is defined in header '<cstddef>'; this is probably fixable by adding '#include <cstddef>'
/usr/include/string.h:413:8: error: 'size_t' does not name a type
  413 | extern size_t strnlen (const char *__string, size_t __maxlen)
      |        ^~~~~~
/usr/include/string.h:413:8: note: 'size_t' is defined in header '<cstddef>'; this is probably fixable by adding '#include <cstddef>'
/usr/include/string.h:444:53: error: 'size_t' has not been declared
  444 | extern char *strerror_r (int __errnum, char *__buf, size_t __buflen)
      |                                                     ^~~~~~
In file included from /usr/include/string.h:462:
/usr/include/strings.h:34:54: error: 'size_t' has not been declared
   34 | extern int bcmp (const void *__s1, const void *__s2, size_t __n)
      |                                                      ^~~~~~
/usr/include/strings.h:38:53: error: 'size_t' has not been declared
   38 | extern void bcopy (const void *__src, void *__dest, size_t __n)
      |                                                     ^~~~~~
/usr/include/strings.h:42:31: error: 'size_t' has not been declared
   42 | extern void bzero (void *__s, size_t __n) __THROW __nonnull ((1));
      |                               ^~~~~~
/usr/include/strings.h:120:61: error: 'size_t' has not been declared
  120 | extern int strncasecmp (const char *__s1, const char *__s2, size_t __n)
      |                                                             ^~~~~~
/usr/include/strings.h:134:27: error: 'size_t' has not been declared
  134 |                           size_t __n, locale_t __loc)
      |                           ^~~~~~
/usr/include/string.h:466:40: error: 'size_t' has not been declared
  466 | extern void explicit_bzero (void *__s, size_t __n) __THROW __nonnull ((1))
      |                                        ^~~~~~
/usr/include/string.h:497:55: error: 'size_t' has not been declared
  497 |                         const char *__restrict __src, size_t __n)
      |                                                       ^~~~~~
/usr/include/string.h:500:53: error: 'size_t' has not been declared
  500 |                       const char *__restrict __src, size_t __n)
      |                                                     ^~~~~~
/usr/include/string.h:506:8: error: 'size_t' does not name a type
  506 | extern size_t strlcpy (char *__restrict __dest,
      |        ^~~~~~
/usr/include/string.h:506:8: note: 'size_t' is defined in header '<cstddef>'; this is probably fixable by adding '#include <cstddef>'
/usr/include/string.h:512:8: error: 'size_t' does not name a type
  512 | extern size_t strlcat (char *__restrict __dest,
      |        ^~~~~~
/usr/include/string.h:512:8: note: 'size_t' is defined in header '<cstddef>'; this is probably fixable by adding '#include <cstddef>'
/usr/include/string.h:526:34: error: 'size_t' has not been declared
  526 | extern void *memfrob (void *__s, size_t __n) __THROW __nonnull ((1))
      |                                  ^~~~~~
a.cc: In function 'int main()':
a.cc:10:5: error: 'scanf' was not declared in this scope
   10 |     scanf("%d %d",&n,&l);
      |     ^~~~~
a.cc:28:9: error: 'printf' was not declared in this scope
   28 |         printf("%s",a[i]);
      |         ^~~~~~
a.cc:5:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
    4 | #include <string.h>
  +++ |+#include <cstdio>
    5 | using namespace std;
a.cc:30:5: error: 'printf' was not declared in this scope
   30 |     printf("\n");
      |     ^~~~~~
a.cc:30:5: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'