Performing String Operations withcout string library (Concatenation)

   #include
   #include

   void main()
	{
	clrscr();

	char s1[25],s2[25],s3[50];

	cout<<"Enter the first string:";
	cin.getline(s1,25);

	cout<<"Enter the second string:";
	cin.getline(s2,25);

	for(int i=0;s1[i]!='\0';i++)
		{
		s3[i]=s1[i];
		}

	for(int j=0;s2[j]!='\0';j++)
		{
		s3[i+j]=s2[j];
		}

	cout<<"The final string is:";

	for(int d=0;s3[d]!='\0';d++)
		{
		cout<
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