WhileToUnderstand

// HomeWork_while.cpp
//

#include <iostream>
#include <string>
using namespace std;
int main()
{
    string block1;
    char stopSymbol;
    char symbolFind;
    cin >> block1 >> stopSymbol >> symbolFind;
    int blockNumber = 0;
    int amount = 0;
    int i = 0;

    while (i < block1.length())
    {
        while (block1[i] != stopSymbol)
        {
            char currentSymbol = block1[i];
            if (currentSymbol == symbolFind)
            {
                amount++;
            }
            i++;
            if (i >= block1.length()) break;
        }

        cout << "Block " << blockNumber << " " << symbolFind << " quantity - " << amount << endl;
        amount = 0;
        blockNumber++;
        i++;
    }
    cout << "That\' all" << endl;

}