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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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+#define MAXLINE     1024
+#define NUM_LINES   15
+
+int main(void) {
+    bool found[NUM_LINES];
+    memset(found, 0, sizeof(found));
+
+    char line[MAXLINE];
+    while ((fgets(line, sizeof(line), stdin)) != NULL) {
+        int n = atoi(line);
+        if (n >= 1 && n <= NUM_LINES)
+            found[n - 1] = true;
+    }
+
+    const char* separator = "";
+    for (int n = 1; n <= NUM_LINES; n++) {
+        if (!found[n - 1]) {
+            printf("%s%d", separator, n);
+            separator = ", ";
+        }
+    }
+    printf("\n");
+}