1 files changed, 20 insertions, 0 deletions
diff --git a/ch2/2-5.c b/ch2/2-5.c
new file mode 100644
index 0000000..495473c
--- /dev/null
+++ b/ch2/2-5.c
@@ -0,0 +1,20 @@
+#include<stdio.h>
+
+int any(char s1[], char s2[]) {
+    int i;
+    int j;
+
+    for (i = 0; s2[i] != '\0'; ++i)
+        for (j = 0; s1[j] != '\0'; ++j)
+            if (s2[i] == s1[j])
+                return j;
+
+    return -1;
+}
+
+int main() {
+    char test_str[] = "blargh";
+    char test_chars[] = "cab";
+    int result = any(test_str, test_chars);
+    printf("%d\n", result);
+}