stuck in a c++ problem?

The question is:

Write a program that simulates coin tossing. For each toss of the coin, the program should print Heads or Tails. Let the program toss the coin 100 times and count the number of times each side of the coin appears. The program should call a function flip that takes no arguments and returns 0 for tails and 1 for heads.

Here is my work:

#include<iostream>

using std::cout;

using std::endl;

using std::cin;

#include<cstdlib>

int main()

{

int flip;

srand(time(0));

for (int i=1, i<=100, i++)

flip=rand() %2 + 1;

if (flip==1)

cout<<"Heads"<<endl;

else

cout<<"Tails"<<endl;

system("pause");

return 0;

}