string all seprater prog for operations of string using c++

for length:-

1. #include <iostream>
2. using namespace std;

2. int main()
3. {
4. string str = "C++ Programming";
6. // you can also use str.length()
7. cout << "String Length = " << str.size();
9. return 0;
10. }

• for copy:-

1. #include <iostream>
2. using namespace std;
3. int main()
4. {
5. string s1, s2;
6. cout << "Enter string s1: ";
7. getline (cin, s1);
8. s2 = s1;
9. cout << "s1 = "<< s1 << endl;
10. cout << "s2 = "<< s2;
11. return 0;
12. }

• for compare:-

• #include<iostream.h>
  #include<conio.h>
  #include<string.h>
  #include<stdio.h>
  void main()
  {
   clrscr();
   char str1[100], str2[100];
   cout<<"Enter first string : ";
   gets(str1);
   cout<<"Enter second string : ";
   gets(str2);
   if(strcmp(str1, str2)==0)
   {
    cout<<"Both the strings are equal";
   }
   else
   {
    cout<<"Both the strings are not equal";
   }
   getch();
  }

• for concat:-

• 
  #include <iostream>
  using namespace std;
  
  int main()
  {
      string s1, s2, result;
  
      cout << "Enter string s1: ";
      getline (cin, s1);
  
      cout << "Enter string s2: ";
      getline (cin, s2);
  
      result = s1 + s2;
  
      cout << "Resultant String = "<< result;
  
      return 0;
  }
  
  
  for palindrome:-
  #include <iostream>
  
  #include <string.h>
  
  using namespace std;
  
  int main()
  
  {
  
      char str1[20], str2[20];
  
      int i, j, len = 0, flag = 0;
  
      cout << "Enter the string : ";
  
      gets(str1);
  
      len = strlen(str1) - 1;
  
      for (i = len, j = 0; i >= 0 ; i--, j++)
  
          str2[j] = str1[i];
  
      if (strcmp(str1, str2))
  
          flag = 1;
  
      if (flag == 1)
  
          cout << str1 << " is not a palindrome";
  
      else
  
          cout << str1 << " is a palindrome";
  
      return 0;
  
  }
  
  
  
  note:-it's just a sudo code if its not executing on your device make some changes in the further code this is only for understanding logic.
  
  
  
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