A - Anton and Letters

Author: heba-mustafa59

A - Anton and Letters.cpp

@@ -0,0 +1,31 @@
+/*
+      yildiz
+*/
+#include <iostream>
+#include <string>
+#include<iomanip>
+#include <algorithm>
+#include <vector>
+using namespace std;
+
+int main()
+{
+    int c = 0;
+    string s;
+    getline(cin, s);
+    int n = s.length();
+    for (int i = 1; i < n - 1; i++) {
+        for (int j = i + 1; j < n - 1; j++) {
+            if (s[j] == s[i]) {
+                s[i] = ' ';
+            }
+        }
+    }
+    for (int i = 0; i < n; i++) {
+        if (s[i] >= 97 && s[i] <= 122) {
+            c++;
+        }
+    }
+    cout << c;
+    return 0;
+}