a1

a1/program.c

@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <ctype.h>
+
+int main(){
+    int ch;
+    int line_count = 0;
+    
+    while((ch = getchar()) != EOF){
+        if(ch >= 'a' && ch <= 'z'){
+           putchar(ch - ('a' - 'A'));
+        }else if(ch >= 'A' && ch <= 'Z'){ 
+           putchar(ch + ('a' - 'A'));
+        }else{
+            putchar(ch);
+            if(ch == '\n'){
+                line_count++;
+            }
+        }
+    }
+    
+    printf("\nPocet nacitanych riadkov: %d\n", line_count);
+    return 0;
+}
+