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 :



title-img 


                            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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