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C++ program to get length of strings, perform concatenation and swap characters
Suppose we have two strings s and t, we shall have to find output in three lines, the first line contains lengths of s and t separated by spaces, the second line is holding concatenation of s and t, and third line contains s and t separated by space but their first characters are swapped.
So, if the input is like s = "hello", t = "programmer", then the output will be
5 10 helloprogrammer pello hrogrammer
To solve this, we will follow these steps −
display length of s then print one space and length of t
display s + t
temp := s[0]
s[0] := t[0]
t[0] := temp
display s then one blank space and display t
Example
Let us see the following implementation to get better understanding −
#include <iostream>
using namespace std;
int main(){
string s = "hello", t = "programmer";
cout << s.length() << " " << t.length() << endl;
cout << s + t << endl;
char temp = s[0];
s[0] = t[0];
t[0] = temp;
cout << s << " " << t << endl;
}
Input
"hello", "programmer"
Output
5 10 helloprogrammer pello hrogrammer
Updated on: 07-Oct-2021
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