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  1. #include <stdio.h>
  2.  
  3. #define SIZE 10
  4.  
  5. double stack[SIZE];
  6. int sp;
  7.  
  8. void push(double value);
  9. double pop(void);
  10. int isFull(void);
  11. int isEmpty(void);
  12. void answer(void);
  13. void reset(void);
  14.  
  15. int main(void)
  16. {
  17.     double data;
  18.     double cal1, cal2;
  19.     int resp;
  20.  
  21.     reset();
  22.  
  23.     while (1) {
  24.         scanf("%d", &resp);
  25.         if (resp == 9) {
  26.             break;
  27.         }
  28.  
  29.         switch (resp) {
  30.             case 1:
  31.                 cal1 = pop();
  32.                 cal2 = pop();
  33.                 push(cal2 + cal1);
  34.                 break;
  35.  
  36.             case 2:
  37.                 cal1 = pop();
  38.                 cal2 = pop();
  39.                 push(cal2 - cal1);
  40.                 break;
  41.  
  42.             case 3:
  43.                 cal1 = pop();
  44.                 cal2 = pop();
  45.                 push(cal2 * cal1);
  46.                 break;
  47.  
  48.             case 4:
  49.                 cal1 = pop();
  50.                 cal2 = pop();
  51.                 push(cal2 / cal1);
  52.                 break;
  53.  
  54.             case 5:
  55.                 printf("data:");
  56.                 scanf("%lf", &data);
  57.                 push(data);
  58.                 printf("%lf\n", data);
  59.                 break;
  60.         }
  61.     }
  62.  
  63.     answer();
  64.     return 0;
  65. }
  66.  
  67. void push(double value)
  68. {
  69.     if (isFull()) {
  70.         printf("スタックが満杯で入りませんでした\n");
  71.     } else {
  72.         stack[sp++] = value;
  73.     }
  74. }
  75.  
  76. double pop(void)
  77. {
  78.     if (isEmpty()) {
  79.         printf("スタックが空で取り出せませんでした\n");
  80.         return 0;
  81.     } else {
  82.         return stack[--sp];
  83.     }
  84. }
  85.  
  86. int isFull(void)
  87. {
  88.     if (sp >= SIZE) {
  89.         return 1;
  90.     } else {
  91.         return 0;
  92.     }
  93. }
  94.  
  95. int isEmpty(void)
  96. {
  97.     if (sp <= 0) {
  98.         return 1;
  99.     } else {
  100.         return 0;
  101.     }
  102. }
  103.  
  104. void answer(void)
  105. {
  106.     printf("\n");
  107.     printf("answer:%lf\n", stack[0]);
  108. }
  109.  
  110. void reset(void)
  111. {
  112.     while (!isEmpty()) {
  113.         pop();
  114.     }
  115. }
Success #stdin #stdout 0s 5312KB
comments (?)
stdin
copy 
5
1
5
2
1
9
stdout
copy 
data:1.000000
data:2.000000

answer:3.000000
https://ideone.com/FevsS2
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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