#include <perms.h>

//          Edinburgh IMP77 Compiler - Version 8.4
//
//     1  %CONTROL X'10000000' ; ! Decode

// _imp_control(0); /* %control is a compiler directive and does not generate code. */

//     2  %BEGIN

int main(int argc, char **argv) { /*%begin*/
  _imp_initialise(argc, argv);

  //     3    %INTEGERFN ACKERMANN(%INTEGER M, N)

  int ACKERMANN(int M, int N) {
    //     4
    //     5     %RESULT = N+1 %IF M = 0

    if (M != 0) goto L_0001;
    return N + 1;
  L_0001:;

  //     6
  //     7     %RESULT = ACKERMANN(M-1, 1) %IF N = 0

    if (N != 0) goto L_0002;
    return ACKERMANN(M - 1, 1);
  L_0002:;

  //     8
  //     9     %RESULT = ACKERMANN(M-1, ACKERMANN(M, N-1))

    return ACKERMANN(M - 1, ACKERMANN(M, N - 1));

    //    10
    //    11    %END

  } /* end of ACKERMANN */

  //    12
  //    13    %INTEGER I

  int I;

  //    14
  //    15    I = ACKERMANN(3,4)

  I = ACKERMANN(3, 4);

  //    16
  //    17    PRINT STRING("Ackermann(3,4) = "); WRITE(I, 0); NEWLINE

  _imp_PRINTSTRING(_imp_str_literal("Ackermann(3,4) = "));
  _imp_WRITE(I, 0);
  _imp_NEWLINE();

  //    18
  //    19  %ENDOFPROGRAM

  _imp_stop(0);
  return 0;
end_0:;
}