Language: C

include <stdio.h>

typedef struct {
	int		hp_max;
	int		hp_cur;
	int		str;
} status;

#define 2 MEMBER

void main()
{
	int i, hp_max1, str1, hp_max2, str2;
	status takahashi, aoki;
	
	scanf("%d %d %d %d", hp_max1, str1, hp_max2, str2);
	
	init(int hp_max1, int str1, int hp_max2, int str2);
	
	do{
		battle();
	}while(takahashi.hp_cur > 0 || aoki.hp_cur > 0)
	
	result();
	
}

void init(int hp_max1, int str1, int hp_max2, int str2)
{
	
	takahashi.hp_max	= hp_max1;
	takahashi.hp_cur	= hp_max1;
	takahashi.str		= str1;
	aoki.hp_max			= hp_max2;
	aoki.hp_cur			= hp_max2;
	aoki.str			= str2;
	
}

void battle()
{
	aoki.hp_cur = aoki.hp_cur - takahashi.str;
	takahashi.hp_cur = takahashi.hp_cur - aoki.atr;
}


void result()
{
	if(aoki.hp_cur <= 0)
	{
		printf("Yes\n");
	} else {
		printf("No\n");
	}
	
}

Compiler output:
main.c:1:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include <stdio.h>
      |         ^
main.c:7:3: warning: data definition has no type or storage class
    7 | } status;
      |   ^~~~~~
main.c:7:3: error: type defaults to 'int' in declaration of 'status' [-Wimplicit-int]
main.c:9:9: error: macro names must be identifiers
    9 | #define 2 MEMBER
      |         ^
main.c: In function 'main':
main.c:14:15: error: expected ';' before 'takahashi'
   14 |         status takahashi, aoki;
      |               ^~~~~~~~~~
      |               ;
main.c:16:9: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
   16 |         scanf("%d %d %d %d", hp_max1, str1, hp_max2, str2);
      |         ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | include <stdio.h>
main.c:16:9: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
   16 |         scanf("%d %d %d %d", hp_max1, str1, hp_max2, str2);
      |         ^~~~~
main.c:16:9: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:18:9: error: implicit declaration of function 'init' [-Wimplicit-function-declaration]
   18 |         init(int hp_max1, int str1, int hp_max2, int str2);
      |         ^~~~
main.c:18:14: error: expected expression before 'int'
   18 |         init(int hp_max1, int str1, int hp_max2, int str2);
      |              ^~~
main.c:21:17: error: implicit declaration of function 'battle' [-Wimplicit-function-declaration]
   21 |                 battle();
      |                 ^~~~~~
main.c:22:16: error: 'takahashi' undeclared (first use in this function)
   22 |         }while(takahashi.hp_cur > 0 || aoki.hp_cur > 0)
      |                ^~~~~~~~~
main.c:22:16: note: each undeclared identifier is reported only once for each function it appears in
main.c:22:40: error: 'aoki' undeclared (first use in this function)
   22 |         }while(takahashi.hp_cur > 0 || aoki.hp_cur > 0)
      |                                        ^~~~
main.c:22:56: error: expected ';' before 'result'
   22 |         }while(takahashi.hp_cur > 0 || aoki.hp_cur > 0)
      |                                                        ^
      |                                                        ;
   23 | 
   24 |         result();
      |         ~~~~~~                                          
main.c: At top level:
main.c:28:6: warning: conflicting types for 'init'; have 'void(int,  int,  int,  int)'
   28 | void init(int hp_max1, int str1, int hp_max2, int str2)
      |      ^~~~
main.c:18:9: note: previous implicit declaration of 'init' with type 'void(int,  int,  int,  int)'
   18 |         init(int hp_max1, int str1, int hp_max2, int str2);
      |         ^~~~
main.c: In function 'init':
main.c:31:9: error: 'takahashi' undeclared (first use in this function)
   31 |         takahashi.hp_max        = hp_max1;
      |         ^~~~~~~~~
main.c:34:9: error: 'aoki' undeclared (first use in this function)
   34 |         aoki.hp_max                     = hp_max2;
      |         ^~~~
main.c: At top level:
main.c:40:6: warning: conflicting types for 'battle'; have 'void()'
   40 | void battle()
      |      ^~~~~~
main.c:21:17: note: previous implicit declaration of 'battle' with type 'void()'
   21 |                 battle();
      |                 ^~~~~~
main.c: In function 'battle':
main.c:42:9: error: 'aoki' undeclared (first use in this function)
   42 |         aoki.hp_cur = aoki.hp_cur - takahashi.str;
      |         ^~~~
main.c:42:37: error: 'takahashi' undeclared (first use in this function)
   42 |         aoki.hp_cur = aoki.hp_cur - takahashi.str;
      |                                     ^~~~~~~~~
main.c: In function 'result':
main.c:49:12: error: 'aoki' undeclared (first use in this function)
   49 |         if(aoki.hp_cur <= 0)
      |            ^~~~
main.c:51:17: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   51 |                 printf("Yes\n");
      |                 ^~~~~~
main.c:51:17: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:51:17: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:51:17: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:53:17: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   53 |                 printf("No\n");
      |                 ^~~~~~
main.c:53:17: note: include '<stdio.h>' or provide a declaration of 'printf'