Language: C

clude <stdio.h>
#include <string.h>
 
void revstr(char* str){
  int size=strlen(str);
  int i,j;
  char tmp;
	
	for(i = 0,j = size - 1; i < size / 2; i++, j--){
		tmp = str[i];
		str[i] = str[j];
		str[j] = tmp;
	}
}
 
int main()
{
  int rev=0;
  int posi_judge;
  int do_judge;
  char main[100000];
  char pre[100000];
  char suf[100000];
  char tmp[2];
  int Q;
  int suf_cnt=0;
  int pre_cnt=0;
  
  scanf("%s",main);
  scanf("%d",&Q);
  for(int i=0;i<Q;i++)
  {
    scanf("%d",&do_judge);
    if (do_judge==1)
    {
      rev++;
    }
    else
    {
      scanf("%d %s",&posi_judge,tmp);
      if ((posi_judge==1 && rev%2==1)||(posi_judge==2 && rev%2==0))
        suf[suf_cnt++]=tmp[0];
      else
        pre[pre_cnt++]=tmp[0];
        
    }
}
  if(rev%2==0)
  {
    revstr(pre);
    printf("%s%s%s",pre,main,suf);
  }
  else
  {
    revstr(main);
    revstr(suf);
    printf("%s%s%s",suf,main,pre);
  }
}

Compiler output:
main.c:1:7: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | clude <stdio.h>
      |       ^
In file included from main.c:2:
/usr/include/string.h:44:22: error: unknown type name 'size_t'
   44 |                      size_t __n) __THROW __nonnull ((1, 2));
      |                      ^~~~~~
/usr/include/string.h:34:1: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
   33 | #include <stddef.h>
  +++ |+#include <stddef.h>
   34 | 
/usr/include/string.h:47:56: error: unknown type name 'size_t'
   47 | extern void *memmove (void *__dest, const void *__src, size_t __n)
      |                                                        ^~~~~~
/usr/include/string.h:47:56: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:55:32: error: unknown type name 'size_t'
   55 |                       int __c, size_t __n)
      |                                ^~~~~~
/usr/include/string.h:55:32: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:61:42: error: unknown type name 'size_t'
   61 | extern void *memset (void *__s, int __c, size_t __n) __THROW __nonnull ((1));
      |                                          ^~~~~~
/usr/include/string.h:61:42: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:64:56: error: unknown type name 'size_t'
   64 | extern int memcmp (const void *__s1, const void *__s2, size_t __n)
      |                                                        ^~~~~~
/usr/include/string.h:64:56: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:80:60: error: unknown type name 'size_t'
   80 | extern int __memcmpeq (const void *__s1, const void *__s2, size_t __n)
      |                                                            ^~~~~~
/usr/include/string.h:80:60: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:107:48: error: unknown type name 'size_t'
  107 | extern void *memchr (const void *__s, int __c, size_t __n)
      |                                                ^~~~~~
/usr/include/string.h:107:48: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:145:53: error: unknown type name 'size_t'
  145 |                       const char *__restrict __src, size_t __n)
      |                                                     ^~~~~~
/usr/include/string.h:145:53: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:153:23: error: unknown type name 'size_t'
  153 |                       size_t __n) __THROW __nonnull ((1, 2));
      |                       ^~~~~~
/usr/include/string.h:153:23: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:159:57: error: unknown type name 'size_t'
  159 | extern int strncmp (const char *__s1, const char *__s2, size_t __n)
      |                                                         ^~~~~~
/usr/include/string.h:159:57: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:166:8: error: unknown type name 'size_t'
  166 | extern size_t strxfrm (char *__restrict __dest,
      |        ^~~~~~
/usr/include/string.h:166:8: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:167:54: error: unknown type name 'size_t'
  167 |                        const char *__restrict __src, size_t __n)
      |                                                      ^~~~~~
/usr/include/string.h:167:54: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:179:8: error: unknown type name 'size_t'
  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 '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:179:59: error: unknown type name 'size_t'
  179 | extern size_t strxfrm_l (char *__dest, const char *__src, size_t __n,
      |                                                           ^~~~~~
/usr/include/string.h:179:59: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:195:45: error: unknown type name 'size_t'
  195 | extern char *strndup (const char *__string, size_t __n)
      |                                             ^~~~~~
/usr/include/string.h:195:45: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:293:8: error: unknown type name 'size_t'
  293 | extern size_t strcspn (const char *__s, const char *__reject)
      |        ^~~~~~
/usr/include/string.h:293:8: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:297:8: error: unknown type name 'size_t'
  297 | extern size_t strspn (const char *__s, const char *__accept)
      |        ^~~~~~
/usr/include/string.h:297:8: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:389:46: error: unknown type name 'size_t'
  389 | extern void *memmem (const void *__haystack, size_t __haystacklen,
      |                                              ^~~~~~
/usr/include/string.h:389:46: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:390:44: error: unknown type name 'size_t'
  390 |                      const void *__needle, size_t __needlelen)
      |                                            ^~~~~~
/usr/include/string.h:390:44: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:398:55: error: unknown type name 'size_t'
  398 |                         const void *__restrict __src, size_t __n)
      |                                                       ^~~~~~
/usr/include/string.h:398:55: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:401:53: error: unknown type name 'size_t'
  401 |                       const void *__restrict __src, size_t __n)
      |                                                     ^~~~~~
/usr/include/string.h:401:53: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:407:8: error: unknown type name 'size_t'
  407 | extern size_t strlen (const char *__s)
      |        ^~~~~~
/usr/include/string.h:407:8: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:413:8: error: unknown type name 'size_t'
  413 | extern size_t strnlen (const char *__string, size_t __maxlen)
      |        ^~~~~~
/usr/include/string.h:413:8: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:413:46: error: unknown type name 'size_t'
  413 | extern size_t strnlen (const char *__string, size_t __maxlen)
      |                                              ^~~~~~
/usr/include/string.h:413:46: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
In file included from /usr/include/features.h:523,
                 from /usr/include/x86_64-linux-gnu/bits/libc-header-start.h:33,
                 from /usr/include/string.h:26:
/usr/include/string.h:432:12: error: unknown type name 'size_t'
  432 | extern int __REDIRECT_NTH (strerror_r,
      |            ^~~~~~~~~~~~~~
/usr/include/string.h:432:12: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
In file included from /usr/include/string.h:462:
/usr/include/strings.h:34:54: error: unknown type name 'size_t'
   34 | extern int bcmp (const void *__s1, const void *__s2, size_t __n)
      |                                                      ^~~~~~
/usr/include/strings.h:24:1: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
   23 | #include <stddef.h>
  +++ |+#include <stddef.h>
   24 | 
/usr/include/strings.h:38:53: error: unknown type name 'size_t'
   38 | extern void bcopy (const void *__src, void *__dest, size_t __n)
      |                                                     ^~~~~~
/usr/include/strings.h:38:53: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/strings.h:42:31: error: unknown type name 'size_t'
   42 | extern void bzero (void *__s, size_t __n) __THROW __nonnull ((1));
      |                               ^~~~~~
/usr/include/strings.h:42:31: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/strings.h:120:61: error: unknown type name 'size_t'
  120 | extern int strncasecmp (const char *__s1, const char *__s2, size_t __n)
      |                                                             ^~~~~~
/usr/include/strings.h:120:61: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/strings.h:134:27: error: unknown type name 'size_t'
  134 |                           size_t __n, locale_t __loc)
      |                           ^~~~~~
/usr/include/strings.h:134:27: note: 'size_t' is defined in header '<stddef.h>'; this is probably fixable by adding '#include <stddef.h>'
/usr/include/string.h:466:40: error: unknown type name '