assignment output is wrong....aaa

alloc.c

 #include "alloc.h"
+
+#include <stdio.h>
+#include <sys/types.h>
+
+void* start = 0;
+void* end = 0;
+extern int fit_type = 1;
+
+
+void* m_malloc(size_t size)
+{	
+	meta* block;
+
+	if(start == 0)
+	{
+		start = sbrk(0);
+		end = start;
+	}
+
+
+	if(end == start)
+	{
+		block = -1;
+	}
+	
+	
+
+	meta* nextblk = end;
+	end += size + sizeof(meta);
+
+	if(sbrk(size+sizeof(meta)) == -1)
+	{
+		return 0;
+	}
+	nextblk->free=0;
+	nextblk->next=0;
+	nextblk->prev = block;
+	nextblk->size = size;
+
+	block = nextblk;
+
+
+	printf("%d %d  ",nextblk->free,nextblk->size);
+		
+
+	return block->data;
+}
+
+void m_free(void *ptr)
+{
+
+	ptr = ptr-sizeof(meta);
+
+	if(!ptr)
+	{
+		printf("NULL\n");
+		return;
+	}
+}
+
+
+void* m_realloc(void* ptr,size_t size){
+
+//GG
+}
\ No newline at end of file

alloc.h

-#ifndef _ALLOC_H_
-#define _ALLOC_H_
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdbool.h> 
+#include <stdint.h>
 
 typedef struct meta_struct {
 
+	uint32_t size;
+	uint32_t free;
+
+	struct meta_struct* next;
+	struct meta_struct* prev;
+
+	char data[1];
+
 } meta;
 
-#endif
+
+void* m_malloc(size_t size);
+
+void  m_free(void* ptr); 
+
+void* m_realloc(void* ptr,size_t size);
+
+

input.txt

+3 F
+s Think like a man of action and act like man of thought.
+s Courage is very important. Like a muscle, it is strengthened by use.
+s Life is the art of drawing sufficient conclusions from insufficient premises.
\ No newline at end of file

main.c

 #include "alloc.h"
 
-int main()
+#include <string.h>
+#include <stdio.h>
+
+
+extern int fit_type;
+
+int main(int argc,char* argv[])
+{
+	char buf[1024];
+	char* tok;
+	int line_num; // 1,2,3,4,5
+	int fit_type=0;
+
+
+	FILE* fp = fopen(argv[1],"r");
+
+	fgets(buf,sizeof(buf),fp);
+	tok = strtok(buf, " ");
+
+	line_num = atoi(tok);
+	if(line_num==0)
+	{
+		printf("line number is zero\n");
+		return 0;
+	}
+
+	tok = strtok(NULL, " ");
+	if(tok[0]=='F')
+		fit_type = 1;
+	else if(tok[0]=='B')
+		fit_type = 2;
+	else if(tok[0]=='W')
+		fit_type = 3;
+	else
 	{
+		printf("fit type is not correct\n");
 		return 0;
 	}
+
+	char** lines = (char**)malloc(line_num * sizeof(char*));
+
+	for(int i=0;i<line_num;i++)
+	{
+		memset(buf,0,sizeof(buf));
+		fgets(buf,sizeof(buf),fp);
+		buf[strlen(buf)-1]=0;
+
+		if(buf[0]=='s')
+		{
+			lines[i] = (char*)m_malloc(sizeof(char)*strlen(buf+2)+1);
+			strcpy(lines[i], buf+2);
+			printf("%s\n", lines[i]);
+			continue;
+		}
+	}
+	//for(int i=0; i<line_num;i++)
+	//{
+	//	printf("%s\n", lines[i]);	
+	//}
+
+
+	return 0;
+
+}
\ No newline at end of file