#include <iostream>
#include <fstream>

int main()
{
  setlocale(0, "Rus");
  char arr[100];
  for(short i = 0; i < 100; arr[i++] = '\0');
  std::ifstream file("text.txt");
  for(short i = 0; !file.eof() && i < 100; arr[i++] = file.get());
  bool write = false;
  for(short i = 0; arr[i++] != '\0';)
  {  
   if(write)  
    std::cout << arr[i];  
   if(arr[i] == ':')  
    write = true;  
   if(arr[i] == '\n')  
    write = false;  
  }  
  std::cin.get();
  return 0;
}

for(bool write = false, short i = 0; arr[i] != '\0'; i++)
{
  if(write)
   std::cout << arr[i];
  if(arr[i] == ':')
   write = true;
  if(arr[i] == '\n')
   write = false;
}