text: /*
   * The program below performs a read on an uninitialized integer variable,
   * which is undefined/unspecified according to the C standard.
   * gcc happily compiles this program and the resulting program prints 0.
   * If you check the error message generated by matchC, you can see that
   * matchC got stuck while attempting to print an undefined value.
   */
  
  
  #include <stdio.h>
  
  
  int main()
  {
    int x;
    printf("%d", x);
  }
  