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2

1. .

2. .

3. .

4. , .

, , .

. :

2.1

  1. sroot (), . sroot () : , . sqrt ().
  2. sleep (), , . sleep () , , , . , 15 : sleep (15); sleep (15);
  3. min (), , . min () , , .
  4. r_str () . r_str () , . , . , , .
  5. prompt () . prompt () , int, double, long.
  1. :

class strt () {

char *p;

int len;

public:

char *getstring () { retutn p; }

int *getlength () { retutn len; } };

. 255 , len 255. . , , . , . , , , , .

  1. stopwatch . 0. - start () stop () . show () . clock (). .
  2. date:

class date {

int day, month, year;

public:

};

. , . , .

  1. date, , date () , time_t. (time_t. - , ++.)
  2. , , main () . ( samp ().)

class samp {

int a;

public:

int get_a () { return a; } };

int main ()





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