Character is present or not in a string using OOP

#include<conio.h>

#include<iostream.h>

#include<string.h>

#include<stdio.h>

class character

{

char a,str[50];

int i,flag;

public:

void readdata();

void result();

};

void character::readdata()

{

cout<<"Enter a string:";

gets(str);

cout<<"Enter a charecter:";

cin>>a;

flag=0;

for(i=0;str[i]!='\0';i++)

if(str[i]==a)

flag=1;

}

void character::result()

{

if (flag==1)

cout<<"charecter is present";

else

cout<<"charecter is not present:";

}

void main()

{

clrscr();

character obj;

obj.readdata();

obj.result();

getch();

}