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  1. #include <stdio.h>
  2.  
  3. #define SIZE 5
  4.  
  5. int stack[SIZE];
  6. int sp;
  7.  
  8. void push(int value);
  9. int pop(void);
  10. int isFull(void);
  11. int isEmpty(void);
  12. void display(void);
  13. void initialize(void);
  14.  
  15. int main(void) {
  16.     sp = 0;
  17.     int resp, data;
  18.  
  19.     while (1) {
  20.         printf("1:push 2:pop 3:initialize 0:end:");
  21.  
  22.         if (scanf("%d", &resp) != 1) {
  23.             break;
  24.         }
  25.  
  26.         if (!resp) break;
  27.  
  28.         switch (resp) {
  29.             case 1:
  30.                 printf("push:");
  31.                 scanf("%d", &data);
  32.                 push(data);
  33.                 break;
  34.  
  35.             case 2:
  36.                 printf("pop: %d\n", pop());
  37.                 break;
  38.  
  39.             case 3:
  40.                 initialize();
  41.                 printf("スタックを初期化しました\n");
  42.                 break;
  43.         }
  44.  
  45.         printf("sp=%d\n", sp);
  46.     }
  47.  
  48.     display();
  49.  
  50.     return 0;
  51. }
  52.  
  53. int isFull(void)
  54. {
  55.     if (sp >= SIZE) {
  56.         return 1;
  57.     } else {
  58.         return 0;
  59.     }
  60. }
  61.  
  62. int isEmpty(void)
  63. {
  64.     if (sp <= 0) {
  65.         return 1;
  66.     } else {
  67.         return 0;
  68.     }
  69. }
  70.  
  71. void push(int value)
  72. {
  73.     if (isFull()) {
  74.         printf("スタックが満杯で入りませんでした\n");
  75.     } else {
  76.         stack[sp++] = value;
  77.     }
  78. }
  79.  
  80. int pop(void)
  81. {
  82.     if (isEmpty()) {
  83.         printf("スタックが空で取り出せませんでした\n");
  84.         return 0;
  85.     } else {
  86.         return stack[--sp];
  87.     }
  88. }
  89.  
  90. void display(void)
  91. {
  92.     printf("\n");
  93.  
  94.     for (int i = 0; i < sp; i++) {
  95.         printf("stack[%d]=%d\n", i, stack[i]);
  96.     }
  97. }
  98.  
  99. void initialize(void)
  100. {
  101.     sp = 0;
  102. }
Success #stdin #stdout 0s 5316KB
comments (?)
stdin
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1
10
1
20
2
0
stdout
copy 
1:push 2:pop 3:initialize 0:end:push:sp=1
1:push 2:pop 3:initialize 0:end:push:sp=2
1:push 2:pop 3:initialize 0:end:pop: 20
sp=1
1:push 2:pop 3:initialize 0:end:
stack[0]=10
https://ideone.com/7xHxnl
language:
C (gcc 8.3)
created:
9 hours ago
visibility:
public

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