funguje

du1/program.c

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