funguje

du1/program.c

@@ -1,19 +1,25 @@
 #include <stdio.h>
 
 int main(){
-
+    int c = 0;
+    while(1){
         char ch;
         int num = 'a' - 'A';
         scanf("%c", &ch);
-    if(ch == EOF || ch == -1){
-        return 0;
+        if(ch == 'q' || ch == -1){
+            break;
         }
-    if(ch >= 'A' && ch <= 'Z'){
+        c++;
+        if(ch <= 'A' && ch >= 'Z'){
             ch += num;
+            c--;
         }
         else if(ch >= 'a' && ch <= 'z'){
             ch -= num;
+            c--;
         }
         printf("%c", ch);
-    
     }
+    printf("%d\n", c);
+}
+