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diff --git a/challenge-240/paulo-custodio/cpp/ch-1.cpp b/challenge-240/paulo-custodio/cpp/ch-1.cpp
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+/*
+Challenge 240
+
+Task 1: Acronym
+Submitted by: Mohammad S Anwar
+
+You are given an array of strings and a check string.
+
+Write a script to find out if the check string is the acronym of the words in
+the given array.
+Example 1
+
+Input: @str = ("Perl", "Python", "Pascal")
+       $chk = "ppp"
+Output: true
+
+Example 2
+
+Input: @str = ("Perl", "Raku")
+       $chk = "rp"
+Output: false
+
+Example 3
+
+Input: @str = ("Oracle", "Awk", "C")
+       $chk = "oac"
+Output: true
+*/
+
+#include <algorithm>
+#include <cctype>
+#include <iostream>
+#include <string>
+#include <vector>
+using namespace std;
+
+void usage(void) {
+    cerr << "Usage: ch-1 -str s1 s2 s3 ... -chk check" << endl;
+    exit(EXIT_FAILURE);
+}
+
+int main(int argc, char* argv[]) {
+    vector<string> strs;
+    string check, inits;
+
+    // parse args
+    int i = 1;
+    while (i < argc) {
+        string arg = argv[i];
+        if (arg=="-str") {
+            i++;
+            while (i < argc && argv[i][0] != '-') {
+                strs.emplace_back(argv[i]);
+                i++;
+            }
+        }
+        else if (arg=="-chk") {
+            i++;
+            if (i < argc) {
+                check = argv[i];
+                i++;
+            }
+        }
+        else {
+            usage();
+        }
+    }
+    if (strs.empty() || check.empty())
+        usage();
+
+    // process
+    transform(check.begin(), check.end(), check.begin(), ::tolower);
+
+    for (size_t i = 0; i < strs.size(); i++) {
+        inits.push_back(tolower(strs[i].front()));
+    }
+
+    if (inits==check) {
+        cout << "true" << endl;
+    }
+    else {
+        cout << "false" << endl;
+    }
+}