1 files changed, 26 insertions, 0 deletions
diff --git a/rushs/tinyprintf/my_strspn/my_strspn.c b/rushs/tinyprintf/my_strspn/my_strspn.c
new file mode 100644
index 0000000..18bba0f
--- /dev/null
+++ b/rushs/tinyprintf/my_strspn/my_strspn.c
@@ -0,0 +1,26 @@
+#include "my_strspn.h"
+
+int is_in(char c, const char *accept)
+{
+    for (; *accept && *accept != c; accept++)
+    {
+        continue;
+    }
+    return *accept != '\0';
+}
+
+size_t my_strspn(const char *s, const char *accept)
+{
+    if (s == NULL || *s == '\0')
+    {
+        return 0;
+    }
+
+    size_t res;
+    for (res = 0; *s && is_in(*s, accept) != 0; res++, s++)
+    {
+        continue;
+    }
+
+    return res;
+}