chore(CPlusPlus): delete alternate characters in a string (#480)

Co-authored-by: Arsenic <54987647+Arsenic-ATG@users.noreply.github.com>

algorithms/CPlusPlus/README.md

@@ -96,7 +96,9 @@
 3. [String reversal](Strings/string-reverse.cpp)
 4. [String tokanisation](Strings/string-tokeniser.cpp)
 5. [Anagram check](Strings/anagram.cpp)
-6. [Remove occurrences from string](algorithms/CPlusPlus/Strings/remove-occurrences.cpp)
+6. [Remove occurrences from string](Strings/remove-occurrences.cpp)
+7. [Delete alternate characters in a string](Strings/delete-alternate-characters.cpp)
+8. [Print first letter of every word](Strings/print-first-letter.cpp)
 
 ## Trees
 

algorithms/CPlusPlus/Strings/delete-alternate-characters.cpp

@@ -0,0 +1,35 @@
+/*
+Description: To delete alternate characters in a string
+Approach: To iterate over string and append the alternate characters in the output string
+*/
+
+#include <iostream>
+#include <string>
+using namespace std;
+
+//function
+string delAlternate(string S) {
+  // declaring an output string
+  string r;
+  //iterating over string and incrementing i by 2 to take alternate characters
+  for(int i=0;i<S.length();i+=2) {
+        r+=S.at(i);
+    }
+  return r;
+  }
+
+//main starts
+int main() {
+  std::cout << "Enter a string: \n";
+  string s;
+  cin>>s;
+  cout<<delAlternate(s);
+}
+
+/*
+Sample Input: 
+Enter a string:
+hello
+output:
+hlo
+*/

algorithms/CPlusPlus/Strings/print-first-letter.cpp

@@ -0,0 +1,46 @@
+/*
+Description: A C++ program to print first letter of every word in a string
+*/
+
+//importing c++ libraries
+#include <iostream>
+#include <string>
+using namespace std;
+
+//function
+string firstAlphabet(string s){
+  //declaring an output string 'o'
+  string o;
+
+  //inserting 1st letter in the output string if it's not starting with space
+  if (s[0] != ' ')  {
+    o += s[0];
+  }
+  //iterating over the string from index 1
+  //if space is found, then the next character is appended in the output string
+  for (int i = 0; i < s.size(); i++) {
+    if (s[i] == ' ' && s[i + 1] != ' ')  {
+      o += s[i + 1];
+    }
+  }
+
+  //returning the string
+  return o;
+}
+
+//main starts
+int main()  {
+  std::cout << "Enter a string: \n";
+  string s;
+  getline(cin, s);
+  cout << firstAlphabet(s);
+}
+
+/*
+Sample Input:
+Enter a string:
+Hello everyone, it's Jamie!
+
+Output:
+HeiJ
+*/