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+/*
+Challenge 117
+
+TASK #1 › Missing Row
+Submitted by: Mohammad S Anwar
+You are given text file with rows numbered 1-15 in random order but there is a
+catch one row in missing in the file.
+
+11, Line Eleven
+1, Line one
+9, Line Nine
+13, Line Thirteen
+2, Line two
+6, Line Six
+8, Line Eight
+10, Line Ten
+7, Line Seven
+4, Line Four
+14, Line Fourteen
+3, Line three
+15, Line Fifteen
+5, Line Five
+
+Write a script to find the missing row number.
+*/
+
+#include <iostream>
+#include <sstream>
+#include <string>
+using namespace std;
+
+const int NUM_LINES = 15;
+
+int main() {
+    bool found[NUM_LINES] = { 0 };
+
+    string line;
+    while (getline(cin, line)) {
+        istringstream iss{ line };
+        int n;
+        iss >> n;
+        if (n >= 1 && n <= NUM_LINES)
+            found[n - 1] = true;
+    }
+
+    string separator = "";
+    for (int n = 1; n <= NUM_LINES; n++) {
+        if (!found[n - 1]) {
+            cout << separator << n;
+            separator = ", ";
+        }
+    }
+    cout << endl;
+}