add strcat

2 files changed, 17 insertions, 0 deletions

diff --git a/strings.c b/strings.c
index b518388..c741938 100644
--- a/strings.c
+++ b/strings.c
@@ -106,3 +106,18 @@ void *memset(void *s, int c, size_t n)
   return s;
 }
 
+char *strcat(char *dst, const char *src)
+{
+  char *where_to_append;
+
+  for (where_to_append = dst; *where_to_append; where_to_append++);
+  
+  size_t i;
+  
+  for (i = 0; src[i]; i++)
+    ((char volatile*) where_to_append)[i] = src[i];
+
+  ((char volatile*) where_to_append)[i] = '\0';
+
+  return dst;
+}
diff --git a/strings.h b/strings.h
index 3c49b7e..aff0533 100644
--- a/strings.h
+++ b/strings.h
@@ -28,4 +28,6 @@ void memcpy(void *dst, void *src, size_t nbytes);
   
 void *memset(void *s, int c, size_t n);
 
+char *strcat(char *dst, const char *src);
+  
 #endif // STRINGS_H