#include <iostream>
// string_replace1.cpp
using namespace std;
int main()
{
	  string base="This is a test base string strung drung droom ";
	  string str2=" //str2 example //";
	  string str3=" **str3 sample**";
	  string str4="## str4 useful ##";
	  string str5, temp;
	  // function versions used in the same order as described above:
       cout<<"\n base.length() "<< base.length(); 
       cout<<"\n str2.length() "<< str2.length(); 
       cout<<"\n str3.length() "<< str3.length(); 
       cout<<"\n str4.length() "<< str4.length(); 
	  // 
	  temp=base;                // "this is a test string."
	  cout<<"\n what is orignal temp :\n\t" << temp <<endl;
	  //-------------------------
	  // replace(pos-of-1st-char,target-span, source string)
	  temp.replace(7,0,str2); 
	  // comlete str2 string inserted , no replacement in the base
	  cout<<"\n what is temp.replace(7,0,str2) :\n\t" << temp <<endl; 
	  //--------------------------
	  temp= base;
	  temp.replace(7,12,str2);  
	  // comlete str2 string inserted, 
	  // and from 7th pos, 12 characters were choped out  
	  // "test base "  will be removed
	  cout<<"\n what is temp.replace(7,12,str2) :\n\t" << temp <<endl; 
	  //--------------------------
	  temp= base;
	  temp.replace(7,12,str3,1,17);  
	  // comlete str3 string inserted, 
	  // and from 7th pos, 12 characters were choped out  
	  // "test base"  will be removed
	  	  cout<<"\n what is temp.replace(7,12,str3,1,17) :\n\t" << temp <<endl; 
	  	//--------------------------
	  	temp= base;
	  	temp.replace(14,27,str4,1,15);  
	  	// the range of characters from 1 to 15 of str4  would be inserted
	  	// and from 14th pos to 27 characters from base string were choped out  
	  	// "base string strung drung d"  will be removed
	  	cout<<"\n what is temp.replace(14,27,str4,1,15) :\n\t" << temp <<endl; 

	  return 0; 
}