Created
January 19, 2015 09:58
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状態遷移の例
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// 状態遷移の例 | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
enum state { STATE_A, STATE_B, STATE_C }; | |
// 状態 A〜C の処理 | |
void a(void); | |
void b(void); | |
void c(void); | |
enum state s = STATE_A; // 状態 | |
char buffer[256]; // scanf で入れる配列 | |
int main(void) { | |
while (1) { | |
switch (s) { | |
case STATE_A: | |
a(); | |
break; | |
case STATE_B: | |
b(); | |
break; | |
case STATE_C: | |
c(); | |
break; | |
default: | |
break; | |
} | |
} | |
return 0; | |
} | |
void a(void) { | |
printf("[状態 A] B: 状態 B に行く, X: 終わる > "); | |
scanf("%s", buffer); | |
switch (buffer[0]) { | |
case 'B': | |
s = STATE_B; | |
break; | |
case 'X': | |
exit(0); | |
default: | |
break; | |
} | |
} | |
void b(void) { | |
printf("[状態 B] A: 状態 A に戻る, C: 状態 C に行く, X: 終わる > "); | |
scanf("%s", buffer); | |
switch (buffer[0]) { | |
case 'A': | |
s = STATE_A; | |
break; | |
case 'C': | |
s = STATE_C; | |
break; | |
case 'X': | |
exit(0); | |
default: | |
break; | |
} | |
} | |
void c(void) { | |
printf("[状態 C] A: 状態 A に行く > "); | |
scanf("%s", buffer); | |
if (buffer[0] == 'A') { | |
s = STATE_A; | |
} | |
} |
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