C++ program to count the characters tab vowels in a line from file

#include<iostream>
#include<conio.h>
#include<process.h>
#include<fstream>
#include<string.h>
using namespace std;

int main()
{
    system("cls");

    int p = 0;
    int k = 0;
    int l = 0;
    int spcount = 0;
    int tabcount = 0;
    char ch;
    char arr[150];
    char str[] = "IF YOU WANT TO   ACCOMPLISH YOUR DREAM THEN WAKE UP";

    ofstream a("example.txt");

    int m = strlen(str);

    for(int j=0;j<m;j++)
    {
        a.put(str[j]);
    }

    a.close();

    ifstream b("example.txt");

    while(b)
    {
        b.get(ch);
        if(ch==' ')
        {
            p++;
        }
        if(ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u' || ch == 'A' || ch == 'E' || ch == 'I' || ch == 'O' || ch == 'U')
        {
            k++;
        }
        if(ch == ' ')
        {
            spcount++;
        }
        if(ch == 't')
        {
            tabcount++;
        }
        std::cout<<ch;
    }

    std::cout<<"n Number of spaces = "<<spcount;
    std::cout<<"n Number of characters = "<<m;
    std::cout<<"n Number of wovels = "<<k;
    std::cout<<"n Number of tabs = "<<tabcount;

    getch();
    return 0;
}

IF YOU WANT TO ACCOMPLISH YOUR DREAM THEN WAKE UP
Number of spaces = 9
Number of charaacters = 50
Number of vowels = 16
Number of tabs = 1