C solution for week 90/part 1

2 files changed, 34 insertions, 0 deletions

diff --git a/challenge-090/abigail/README b/challenge-090/abigail/README
index 63ba3455ca..9a1cfc4990 100644
--- a/challenge-090/abigail/README
+++ b/challenge-090/abigail/README
@@ -3,6 +3,7 @@ Solution by Abigail
 * Task 1
     * bash/sh
     * Befunge-93
+    * C
     * Perl
 
 * Task 2
diff --git a/challenge-090/abigail/c/ch-1.c b/challenge-090/abigail/c/ch-1.c
new file mode 100644
index 0000000000..d633cd7979
--- /dev/null
+++ b/challenge-090/abigail/c/ch-1.c
@@ -0,0 +1,33 @@
+# include <stdlib.h>
+# include <stdio.h>
+# include <string.h>
+
+/*
+ * For challenge description, see ../perl/ch-1.pl
+ */
+
+int main (void) {
+    char *  line    = NULL;
+    size_t  len     = 0;
+
+    while (getline (&line, &len, stdin) != -1) {
+        char * line_ptr = line;
+
+        while (*line_ptr) {
+            switch (*line_ptr) {
+                /* Replace the characters */
+                case 'A': *line_ptr = 'T'; break;
+                case 'T': *line_ptr = 'A'; break;
+                case 'C': *line_ptr = 'G'; break;
+                case 'G': *line_ptr = 'C'; break;
+                /* We don't want to count the newline */
+                default:  *line_ptr =  0;  break;
+            }
+            line_ptr ++;
+        }
+        printf ("%lu\n%s\n", strlen (line), line);
+    }
+    free (line);
+
+    return (0);
+}