Program in C++ to find a given character in given string

Program in C++ to find a given character in given string

#include<iostream>
#include<string.h>
#include<conio.h>
 using namespace std;
 int StrFind(char *str,char f)
    {
     int i,flag=1;
     for(i=0;str[i]!='\0';i++)
     {
      if(str[i]==f)
         {
          flag=0;
          return 0;
          break;
      }
  }
  if(flag==1)
   return 1;
    }
 int main()
  {
   char str1[100];
   char ch;
   cout<<"Enter string :-";
   cin.getline(str1,99);
   cout<<"Enter a character you wnat to search:-";
   cin>>ch;
   int r=StrFind(str1,ch);
   if(r==0)
     cout<<ch<<" is present in given string.";
   else
     cout<<ch<<" is not present in given string.";
   return 0;
  }
 

Output:-