- #include <stdio.h> 
-   
- int cont() 
- { 
-   char c; do { 
-   } while (c != 'y' && c != 'n'); 
-   return c == 'y'; 
- } 
-   
- int main() 
- { 
-   int i = 0; 
-   do { 
-     printf("Loop iteration %d.\n", ++- i );
 
-   } while (cont()); 
-   /* done */ 
-   return 0; 
- } 
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