1 files changed, 28 insertions, 0 deletions
diff --git a/src/string/strpbrk.c b/src/string/strpbrk.c
new file mode 100644
index 00000000..0b88b999
--- /dev/null
+++ b/src/string/strpbrk.c
@@ -0,0 +1,28 @@
+#include <string.h>
+#include "nonstd/assert.h"
+
+/** count matching characters **/
+char * strpbrk(const char *s1, const char *s2)
+{
+	size_t i;
+
+	ASSERT_NONNULL(s1);
+	ASSERT_NONNULL(s2);
+
+	for (i = 0; i < strlen (s1); i++) {
+		if (strchr(s2, s1[i]) != NULL) {
+			return (char*)s1 + i;
+		}
+	}
+
+	return NULL;
+}
+
+/***
+locates the first occurence in ARGUMENT(s1) of any character in ARGUMENT(s2).
+***/
+/*
+	RETURN_FAILURE(CONSTANT(NULL));
+	RETURN_SUCCESS(a pointer to the located character);
+STDC(1)
+*/