1 files changed, 20 insertions, 0 deletions
diff --git a/2.10.c b/2.10.c
new file mode 100644
index 0000000..edbf440
--- /dev/null
+++ b/2.10.c
@@ -0,0 +1,20 @@
+#include <stdio.h>
+
+char lower(char intput);
+
+int 
+main(void)
+{
+  char intput;
+
+  while((intput = getchar()) != EOF)
+    printf("%c", lower(intput));
+
+  return 0;
+}
+
+char 
+lower(char intput)
+{
+  return (intput >= 'A' && intput <= 'Z') ? intput-'A'+'a' : intput;
+}