88 lines
1.5 KiB
C
88 lines
1.5 KiB
C
/*
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* Test Bad
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* Bad example.
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*/
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typedef char bool;
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typedef enum
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{
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STATE_I = 0,
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STATE_A,
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STATE_B,
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STATE_C,
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STATE_D
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}
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testfsm_state_t;
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typedef struct
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{
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testfsm_state_t m_state;
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bool m_a;
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bool m_b;
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} testfsm_t;
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void process(testfsm_t *p_fsm, const bool input)
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{
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testfsm_state_t nextState = p_fsm->m_state;
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p_fsm->m_a = false;
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p_fsm->m_b = false;
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switch(p_fsm->m_state)
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{
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case STATE_I:
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if (!input)
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nextState = STATE_A;
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else
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nextState = STATE_B;
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break;
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case STATE_A:
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//p_fsm->m_a = true; //oops
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if (!input)
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nextState = STATE_D;
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else
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nextState = STATE_C;
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break;
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case STATE_B:
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p_fsm->m_a = true;
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p_fsm->m_b = true;
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nextState = STATE_C;
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break;
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case STATE_C:
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p_fsm->m_b = true;
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nextState = STATE_A;
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break;
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case STATE_D:
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nextState = STATE_B;
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break;
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}
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p_fsm->m_state = nextState;
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}
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bool randbool(int throws)
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{
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bool stillTrue = true;
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for (int i = 0; i < throws; ++i)
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{
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stillTrue &= rand() & 1;
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}
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return stillTrue;
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}
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int main()
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{
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testfsm_t fsm = { .m_state = STATE_I, .m_a = false, .m_b = false };
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bool input = false;
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srand(0);
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for (int j = 0; j < 100; ++j)
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{
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input = randbool(1);
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process(&fsm, input);
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}
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return 0;
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}
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