144 lines
2.6 KiB
C
144 lines
2.6 KiB
C
#include "calculator.h"
|
|
|
|
void handleCalc(struct calculator *calc, int input) {
|
|
switch (calc->state) {
|
|
case NUMBER_FIRST:
|
|
switch (input) {
|
|
case 0:
|
|
calc->num1 = (calc->num1 * 10) + 7;
|
|
break;
|
|
case 1:
|
|
calc->num1 = (calc->num1 * 10) + 8;
|
|
break;
|
|
case 2:
|
|
calc->num1 = (calc->num1 * 10) + 9;
|
|
break;
|
|
case 3:
|
|
calc->operation = DIV;
|
|
calc->state = NUMBER_SECOND;
|
|
break;
|
|
case 4:
|
|
calc->num1 = (calc->num1 * 10) + 4;
|
|
break;
|
|
case 5:
|
|
calc->num1 = (calc->num1 * 10) + 5;
|
|
break;
|
|
case 6:
|
|
calc->num1 = (calc->num1 * 10) + 6;
|
|
break;
|
|
case 7:
|
|
calc->operation = MUL;
|
|
calc->state = NUMBER_SECOND;
|
|
break;
|
|
case 8:
|
|
calc->num1 = (calc->num1 * 10) + 1;
|
|
break;
|
|
case 9:
|
|
calc->num1 = (calc->num1 * 10) + 2;
|
|
break;
|
|
case 10:
|
|
calc->num1 = (calc->num1 * 10) + 3;
|
|
break;
|
|
case 11:
|
|
calc->operation = SUB;
|
|
calc->state = NUMBER_SECOND;
|
|
break;
|
|
case 12:
|
|
calc->num1 = (calc->num1 * 10);
|
|
break;
|
|
case 13:
|
|
clearCalc(calc);
|
|
break;
|
|
case 14:
|
|
break;
|
|
case 15:
|
|
calc->operation = ADD;
|
|
calc->state = NUMBER_SECOND;
|
|
break;
|
|
}
|
|
break;
|
|
case NUMBER_SECOND:
|
|
switch (input) {
|
|
case 0:
|
|
calc->num2 = (calc->num2 * 10) + 7;
|
|
break;
|
|
case 1:
|
|
calc->num2 = (calc->num2 * 10) + 8;
|
|
break;
|
|
case 2:
|
|
calc->num2 = (calc->num2 * 10) + 9;
|
|
break;
|
|
case 3:
|
|
break;
|
|
case 4:
|
|
calc->num2 = (calc->num2 * 10) + 4;
|
|
break;
|
|
case 5:
|
|
calc->num2 = (calc->num2 * 10) + 5;
|
|
break;
|
|
case 6:
|
|
calc->num2 = (calc->num2 * 10) + 6;
|
|
break;
|
|
case 7:
|
|
break;
|
|
case 8:
|
|
calc->num2 = (calc->num2 * 10) + 1;
|
|
break;
|
|
case 9:
|
|
calc->num2 = (calc->num2 * 10) + 2;
|
|
break;
|
|
case 10:
|
|
calc->num2 = (calc->num2 * 10) + 3;
|
|
break;
|
|
case 11:
|
|
break;
|
|
case 12:
|
|
calc->num2 = (calc->num2 * 10);
|
|
break;
|
|
case 13:
|
|
clearCalc(calc);
|
|
break;
|
|
case 14:
|
|
switch (calc->operation) {
|
|
case ADD:
|
|
calc->result = calc->num1 + calc->num2;
|
|
calc->state = RESULT;
|
|
break;
|
|
case SUB:
|
|
calc->result = calc->num1 - calc->num2;
|
|
calc->state = RESULT;
|
|
break;
|
|
case MUL:
|
|
calc->result = calc->num1 * calc->num2;
|
|
calc->state = RESULT;
|
|
break;
|
|
case DIV:
|
|
calc->result = calc->num1 / calc->num2;
|
|
calc->state = RESULT;
|
|
break;
|
|
}
|
|
break;
|
|
case 15:
|
|
break;
|
|
}
|
|
break;
|
|
case RESULT:
|
|
switch (input) {
|
|
case 14:
|
|
clearCalc(calc);
|
|
break;
|
|
case 13:
|
|
clearCalc(calc);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void clearCalc(struct calculator *calc) {
|
|
calc->state = NUMBER_FIRST;
|
|
calc->operation = NO_OP;
|
|
calc->num1 = 0;
|
|
calc->num2 = 0;
|
|
calc->result = 0;
|
|
} |