diff --git a/main.c b/main.c
new file mode 100644
index 0000000..b024003
--- /dev/null
+++ b/main.c
@@ -0,0 +1,38 @@
+#include <stdio.h>
+
+int main()
+{
+    int znak;
+    char znak2;
+    int pocet=0;
+
+        while(znak=getchar(),znak!=EOF)
+        {
+            if(znak>=97 && znak<=122)
+            {
+                znak2=znak-32;
+                putchar(znak2);
+            }
+            
+            else if(znak>=65 && znak<=90)
+            {
+                znak2=znak+32;
+                putchar(znak2);
+            }
+            else if(znak=='\n')
+            {
+            pocet++;
+            printf("\n");
+            }
+            else
+            {
+                putchar(znak);
+            }
+         
+         }
+        printf("Počet riadkov: %d",pocet);
+        printf("\n");
+
+
+    return 0;
+}
\ No newline at end of file