String Tasks

//
//  main.cpp
//  test
//
//  Created by MacBook on 18.04.2020.
//  Copyright © 2020 MacBook. All rights reserved.
//

#include <iostream>
using namespace std;

void allEnteringSymbols()
{
    //deleting all entering symbols
    char baby[32];
    cout << "Please enter a string" << endl;
    cin >> baby;
    char symbolToDelete;
    cout << "What symbol to delete? Enter please a number " << endl;
    cin >> symbolToDelete;
    int stringCounter = 0;
    while (*(baby + stringCounter) != '\0') {
        stringCounter++;
    }

    for (int i = 0; i < stringCounter; i++) {
        if(baby[i] == symbolToDelete)
        {
            baby[i] = '\0';
        }
    }

    for (int i = 0; i < stringCounter; i++) {
        cout << baby[i] << endl;
    }
}
//--------------
//symbol to delete
void symbolToDelete()
{
  char string[32];
  int numberToDelete = 0;
  cout << "Please enter a string" << endl;
  cin >> string;
  cout << "Please enter what symbol to delete? Enter a number" << endl;
  cin >> numberToDelete;
  string[numberToDelete] = ' ';
  cout << string;
}
//entering a symbol to string by a number
void enteringSymbol ()
{
    char string[] = "Hello World";
    int positionNumber = 0;
    char symbolToChange;
    cout << "Please enter the position number" << endl;
    cin >> positionNumber;
    cout << "Please enter a symbol to change" << endl;
    cin >> symbolToChange;
    string[positionNumber] = symbolToChange;
    cout << string << endl;

}

void changingSymbols ()
{
    char string[32];
    char symbolToChange = '!';
    int stringCounter = 0;
    cout << "Please enter a string" << endl;
    cin >> string;
    while (string[stringCounter] != '\0') {
        if (string[stringCounter] == '.')
        {
            string[stringCounter] = symbolToChange;
        }
        stringCounter++;
    }
    cout << string << endl;
}

void symbolCounter()
{
    char string[32];
    char symbolToRescue;
    int symbolCounter = 0;
    cout << "Please enter a string" << endl;
    cin >> string;
    cout << "Please enter the symbol to find" << endl;
    cin >> symbolToRescue;
    for (int i = 0; i < strlen(string); i++) {
        if (string[i] == symbolToRescue) {
            symbolCounter++;
        }
    }
    cout << "How many times the symbol in the string -> " << symbolCounter << endl;

}
//получаем длину строки
int GetStringSize(char *str)
{
    int counter = 0;
    while (str[counter] != '\0') {
        counter++;
    }
    return counter;
}
//функция проверки на буквы
bool IsCharSymbol(char Symbol)
{
    short symb = Symbol;
    if (((symb > 64) && (symb < 91)) || ((symb > 96) && (symb < 123))) {
        return true;
    }
    return false;
}
//функция проверки на цифры
bool IsCharNumber(char Number)
{
    short symb = Number;
    if ( symb > 47 && symb < 58) {
        return true;
    }
    return false;
}

int main(int argc, const char * argv[]) {

    allEnteringSymbols();
    enteringSymbol();
    changingSymbols();
    symbolCounter();
    char* str = new char [128];
    cin.getline(str, 128);

    int StringLength = GetStringSize(str);//получили длину
    int LeterCounter = 0;
    int NumberCounter = 0;
    int OtherSymbols = 0;
    for (int i = 0; i < StringLength; i++) {//идем по стрингу
        if (IsCharSymbol(str[i])) {
            LeterCounter++;
        }else if(IsCharNumber(str[i]))
        {
            NumberCounter++;
        } else{
            OtherSymbols++;
        }
    }
    cout << "Letter quantity is " << LeterCounter << endl;
    cout << "Number quantity is " << NumberCounter << endl;
    cout << "OtherSymbols quantity is " << OtherSymbols << endl;
    return 0;
}