3 files changed, 95 insertions, 0 deletions
diff --git a/challenge-113/abigail/README.md b/challenge-113/abigail/README.md
index b4469041da..a1e156b3c0 100644
--- a/challenge-113/abigail/README.md
+++ b/challenge-113/abigail/README.md
@@ -20,6 +20,7 @@ Output: 1
 ### Solutions
 * [AWK](awk/ch-1.awk)
 * [Bash](bash/ch-1.sh)
+* [C](c/ch-1.c)
 * [Perl](perl/ch-1.pl)
 
 ### Blog
@@ -57,6 +58,7 @@ Output: 1
 ### Solutions
 * [AWK](awk/ch-2.awk)
 * [Bash](bash/ch-2.sh)
+* [C](c/ch-1.c)
 * [Perl](perl/ch-2.pl)
 
 ### Blog
diff --git a/challenge-113/abigail/c/ch-1.c b/challenge-113/abigail/c/ch-1.c
new file mode 100644
index 0000000000..e673fa7281
--- /dev/null
+++ b/challenge-113/abigail/c/ch-1.c
@@ -0,0 +1,44 @@
+# include <stdlib.h>
+# include <stdio.h>
+# include <string.h>
+# include <stdbool.h>
+
+/*
+ * See ../README.md
+ */
+
+/*
+ * Run as: cc -o ch-1.o ch-1.c; ./ch-1.o < input-file
+ */
+
+typedef long long number;
+typedef short     digit;
+
+unsigned short tens [] = {0, 0, 1, 2, 1, 0, 2, 6, 3, 8};
+
+int main (void) {
+    number N;
+    digit  D;
+
+    while (scanf ("%lld %hd", &N, &D) == 2) {
+        digit D10 = D == 0 ? 100 : 10 * D;
+        if (N >= D10 || (N % (D ? D : 10) == 0)) {
+            printf ("1\n");
+            continue;
+        }
+        bool valid = false;
+        for (unsigned short i = 1; i <= tens [D]; i ++) {
+            number T = N - 10 * i - D;
+            if (T >= 0 && T % D == 0) {
+                printf ("1\n");
+                valid = true;
+                break;
+            }
+        }
+        if (!valid) {
+            printf ("0\n");
+        }
+    }
+
+    return (0);
+}
diff --git a/challenge-113/abigail/c/ch-2.c b/challenge-113/abigail/c/ch-2.c
new file mode 100644
index 0000000000..fa2f79c27a
--- /dev/null
+++ b/challenge-113/abigail/c/ch-2.c
@@ -0,0 +1,49 @@
+# include <stdlib.h>
+# include <stdio.h>
+# include <string.h>
+
+/*
+ * See ../README.md
+ */
+
+/*
+ * Run as: cc -o ch-2.o ch-2.c; ./ch-2.o < input-file
+ */
+
+typedef long long number;
+
+int main (void) {
+    char *  line = NULL;
+    size_t  len  = 0;
+
+    while (getline (&line, &len, stdin) != -1) {
+        size_t offset = 0;
+        int skip;
+        long long n, sum;
+
+        /*
+         * Read the numbers, calculate the sum.
+         */
+        sum = 0;
+        while (sscanf (line + offset, "%lld%n", &n, &skip) == 1) {
+            sum    += n;
+            offset += skip;
+        }
+
+        /*
+         * Read the numbers again, write output.
+         */
+        offset = 0;
+        while (sscanf (line + offset, "%lld%n", &n, &skip) == 1) {
+            if (offset) {
+                printf (" ");
+            }
+            printf ("%lld", sum - n);
+            offset += skip;
+        }
+        printf ("\n");
+    }
+    free (line);
+
+    return (0);
+}