chore: add findingAnA program

.vscode/settings.json

@@ -1,5 +1,6 @@
 {
     "files.associations": {
-        "iostream": "cpp"
+        "iostream": "cpp",
+        "*.tcc": "cpp"
     }
 }

findingAnA/main.cpp

@@ -0,0 +1,10 @@
+#include <iostream>
+#include <string>
+using namespace std;
+
+int main(){
+    string x = "";
+    cin >> x;
+    cout << x.substr(x.find('a'), x.length());
+    return 0;
+}