diff --git a/solutions/cpp/pangram/1/pangram.cpp b/solutions/cpp/pangram/1/pangram.cpp
new file mode 100644
index 0000000..a6de4a7
--- /dev/null
+++ b/solutions/cpp/pangram/1/pangram.cpp
@@ -0,0 +1,26 @@
+#include "pangram.h"
+
+namespace pangram {
+    bool is_pangram(std::string_view text) {
+        int seen_letters = 0; // Aquí guardaremos los 26 bits
+
+        for (char c : text) {
+            // 1. Convertir a minúscula de forma manual y segura (ASCII)
+            if (c >= 'A' && c <= 'Z') {
+                c = c + ('a' - 'A');
+            }
+
+            // 2. Si es una letra del alfabeto inglés, encendemos su bit
+            if (c >= 'a' && c <= 'z') {
+                int bit_position = c - 'a';
+                seen_letters |= (1 << bit_position); 
+            }
+        }
+
+        // 3. Máscara de control: ¿Están los 26 bits encendidos?
+        constexpr int all_26_letters_mask = (1 << 26) - 1;
+        
+        return seen_letters == all_26_letters_mask;
+    }
+
+}
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diff --git a/solutions/cpp/pangram/1/pangram.h b/solutions/cpp/pangram/1/pangram.h
new file mode 100644
index 0000000..562a6e3
--- /dev/null
+++ b/solutions/cpp/pangram/1/pangram.h
@@ -0,0 +1,6 @@
+#pragma once
+#include <string_view>
+
+namespace pangram {
+    bool is_pangram(std::string_view text);
+}
\ No newline at end of file