/* C++ Program - Swap Two Strings */
		
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
void main()
{
  clrscr();
  int i=0, j=0;
  char str1[20], str2[20], temp[20];
  cout<<"Enter the First String : ";
  gets(str1);
  cout<<"Enter the Second String : ";
  gets(str2);
  cout<<"Strings before swapping are :\n";
  cout<<"String 1 = "<<str1<<"\n";
  cout<<"String 2 = "<<str2<<"\n";
  while(str1[i]!='\0')
  {
	temp[j]=str1[i];
	i++;
	j++;
  }
  temp[j]='\0';
  i=0, j=0;
  while(str2[i]!='\0')
  {
	str1[j]=str2[i];
	i++;
	j++;
  }
  str1[j]='\0';
  i=0, j=0;
  while(temp[i]!='\0')
  {
	str2[j]=temp[i];
	i++;
	j++;
  }
  str2[j]='\0';
  cout<<"Strings after swapping : \n";
  cout<<"String 1 = "<<str1<<"\n";
  cout<<"String 2 = "<<str2<<"\n";
  getch();
}


Output
Enter the First String : blazing
Enter the Second String :minds
Strings before swapping are :
String 1 = blazing
String 2 = minds
Strings after swapping :
String 1 = minds
String 2 = blazing