**Strings C++**

### Problem Statement :

C++ provides a nice alternative data type to manipulate strings, and the data type is conveniently called string. Some of its widely used features are the following: Declaration: string a = "abc"; Size: int len = a.size(); Concatenate two strings: string a = "abc"; string b = "def"; string c = a + b; // c = "abcdef". Accessing i th element: string s = "abc"; char c0 = s[0]; // c0 = 'a' char c1 = s[1]; // c1 = 'b' char c2 = s[2]; // c2 = 'c' s[0] = 'z'; // s = "zbc" P.S.: We will use cin/cout to read/write a string. Input Format You are given two strings, a and b , separated by a new line. Each string will consist of lower case Latin characters ('a'-'z'). Output Format In the first line print two space-separated integers, representing the length of a and b respectively. In the second line print the string produced by concatenating a and b(a + b). In the third line print two strings separated by a space, a' and b' . a' and b' are the same as a and b, respectively, except that their first characters are swapped.

### Solution :

` ````
Solution in C :
#include <iostream>
#include <string>
using namespace std;
int main() {
string a, b;
cin >> a >> b;
cout << a.length() << " " << b.length() << endl;
cout << a << b << endl;
swap(a[0], b[0]);
cout << a << " " << b << endl;
return 0;
}
```

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