int main() {
Calc_ctor(&l_calc); /* Calc "constructor" invokes QMsm_ctor() */
QMSM_INIT(&l_calc.super, (QEvt *)0); /* trigger initial transition */
for (;;) { /* event loop */
QEvt e;
. . .
/* wait for the next event and assign it to the event object e */
. . .
QMSM_DISPATCH(&l_calc.super, &e); /* dispatch e */
}
/*..........................................................................*/
int main() {
Calc_ctor(); /* explicitly instantiate the calculator object */
printf("Calculator example, QEP version: %s\n"
"Press '0' .. '9' to enter a digit\n"
"Press '.' to enter the decimal point\n"
"Press '+' to add\n"
"Press '-' to subtract or negate a number\n"
"Press '*' to multiply\n"
"Press '/' to divide\n"
"Press '%%' to perform percentage calculation\n"
"Press '=' or <Enter> to get the result\n"
"Press 'c' or 'C' to Cancel\n"
"Press 'e' or 'E' to Cancel Entry\n"
"Press <Esc> to quit.\n\n",
QEP_getVersion());
QMSM_INIT(the_calc, (QEvt *)0); /* trigger initial transition */
for (;;) { /* event loop */
CalcEvt e; /* Calculator event */
BSP_display(); /* show the display */
printf(": ");
fflush(stdout);
e.key_code = (uint8_t)_getche(); /* get a char with echo */
printf(" ");
switch (e.key_code) {
case 'c': /* intentionally fall through */
case 'C': {
((QEvt *)&e)->sig = C_SIG;
break;
}
case 'e': /* intentionally fall through */
case 'E': {
((QEvt *)&e)->sig = CE_SIG;
break;
}
case '0': {
((QEvt *)&e)->sig = DIGIT_0_SIG;
break;
}
case '1': /* intentionally fall through */
case '2': /* intentionally fall through */
case '3': /* intentionally fall through */
case '4': /* intentionally fall through */
case '5': /* intentionally fall through */
case '6': /* intentionally fall through */
case '7': /* intentionally fall through */
case '8': /* intentionally fall through */
case '9': {
((QEvt *)&e)->sig = DIGIT_1_9_SIG;
break;
}
case '.': {
((QEvt *)&e)->sig = POINT_SIG;
break;
}
case '+': /* intentionally fall through */
case '-': /* intentionally fall through */
case '*': /* intentionally fall through */
case '/': {
((QEvt *)&e)->sig = OPER_SIG;
break;
}
case '=': /* intentionally fall through */
case '\r': { /* Enter key */
((QEvt *)&e)->sig = EQUALS_SIG;
break;
}
case '%': { /* Percent key */
((QEvt *)&e)->sig = PERCENT_SIG;
break;
}
case '\33': { /* ESC key */
((QEvt *)&e)->sig = OFF_SIG;
break;
}
default: {
((QEvt *)&e)->sig = 0; /* invalid event */
break;
}
}
if (((QEvt *)&e)->sig != 0) { /* valid event generated? */
QMSM_DISPATCH(the_calc, (QEvt *)&e); /* dispatch event */
}
}
return 0;
}