ANTICHAT — форум по информационной безопасности, OSINT и технологиям

FILE *MyFile, *OUT;
char temp;
Symbols[3] = {'a', 'b', 'c'};
......

MyFile = fopen("1.txt", "r");
OUT = fopen("2.txt", "wb");
while(!feof(MyFile))
{
  fread(&temp, 1, sizeof(char), MyFile);
  for(i=0; i<3; i++)
    if(temp == Symbols[i])
	fwrite((const char*)&a[i], 1, sizeof(a[i]), OUT);
}

FILE *MyFile, *OUT;
char temp;
Symbols[3] = {'a', 'b', 'c'};
......

MyFile = fopen("1.txt", "r");
OUT = fopen("2.txt", "wb");
while((temp=fgetc(MyFile))!=EOF)
{
  for(i=0; i<3; i++)
    if(temp == Symbols[i])
	fwrite((const char*)&a[i], 1, sizeof(a[i]), OUT);
}

#include <stdio.h>

void main()
{
	FILE *in, *out;

	//кодирование 3мя битами
	int ar[3] = {0x00, 0x05, 0x07}; //коды 'a', 'b', 'c'
	char buf; //тут сидит считанный байт с файла

	in = fopen("f1.txt", "rb");
	out = fopen("f2.bin", "wb");

	int count = 0;

	union {
		int out_buf;
		char b[4];
	} data;

	data.out_buf = 0;

	while(fread(&buf, 1, 1, in))
	{
		if(count < 8)
		{ //не записываем, пока не наберем кратное 8ми
			//количество битов
			data.out_buf = (data.out_buf<<3) + ar[buf - 'a'];
			count++;
		}
		else
		{ //запись битов			
			fwrite(&data.b[2], 1, 1, out);
			fwrite(&data.b[1], 1, 1, out);
			fwrite(&data.b[0], 1, 1, out);
			data.out_buf = ar[buf - 'a'];
			count = 1;
		}
	}

	if(count > 0)
	{ //запись остатков
		fwrite(&data.b[2], 1, 1, out);
		fwrite(&data.b[1], 1, 1, out);
		fwrite(&data.b[0], 1, 1, out);
	}

	fclose(out);
	fclose(in);
}

bacbabcabcbacbabcbacba

struct list{int elem;
            list *next;
            list *down;};

int main() {
	list *curr, *head;
	head = NULL;
	curr = NULL;

	cin >> stolb;
	cin >> strok;

	for (int j=0; j<strok; j++){
		for(int i=0; i<stolb; i++) {
			curr = (list*) new int [strok];
			curr->elem = rand()%10+1;
			curr->next = head;
			head = curr;
		}
		curr->down = head;
	}
return 0;
}