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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.     int resp;
  18.     double value;
  19.     double cal1, cal2;
  20.  
  21.     reset();
  22.  
  23.     while (1) {
  24.         if (scanf("%d", &resp) != 1) {
  25.             return 0;
  26.         }
  27.  
  28.         if (resp==9) {
  29.             break;
  30.         }
  31.  
  32.         switch (resp) {
  33.             case 1:
  34.                 cal2 = pop();
  35.                 cal1 = pop();
  36.                 push(cal1 + cal2);
  37.                 break;
  38.  
  39.             case 2:
  40.                 cal2 = pop();
  41.                 cal1 = pop();
  42.                 push(cal1 - cal2);
  43.                 break;
  44.  
  45.             case 3:
  46.                 cal2 = pop();
  47.                 cal1 = pop();
  48.                 push(cal1 * cal2);
  49.                 break;
  50.  
  51.             case 4:
  52.                 if (stack[sp - 1] == 0.0) {
  53.                 	printf("0で割ることはできません\n");
  54.                 } 
  55.                 else {
  56.                     cal2 = pop();
  57.                     cal1 = pop();
  58.                     push(cal1 / cal2);
  59.                 }
  60.                 break;
  61.  
  62.             case 5:
  63.                 scanf("%lf", &value);
  64.                 push(value);
  65.                 printf("data:%f\n", value);
  66.                 break;
  67.         }
  68.     }
  69.  
  70.     answer();
  71.  
  72.     return 0;
  73. }
  74.  
  75. void push(double value)
  76. {
  77.     if (isFull() == 1) {
  78.         printf("スタックが満杯で入りませんでした\n");
  79.     } else {
  80.         stack[sp] = value;
  81.         sp++;
  82.     }
  83. }
  84.  
  85. double pop(void)
  86. {
  87.     if (isEmpty() == 1) {
  88.         printf("スタックが空で取り出せませんでした\n");
  89.         return 0.0;
  90.     } else {
  91.         sp--;
  92.         return stack[sp];
  93.     }
  94. }
  95.  
  96. int isFull(void)
  97. {
  98.     if (sp >= SIZE) {
  99.         return 1;
  100.     } else {
  101.         return 0;
  102.     }
  103. }
  104.  
  105. int isEmpty(void)
  106. {
  107.     if (sp == 0) {
  108.         return 1;
  109.     } else {
  110.         return 0;
  111.     }
  112. }
  113.  
  114. void answer(void)
  115. {
  116.     printf("answer:%f\n", stack[sp - 1]);
  117. }
  118.  
  119. void reset(void)
  120. {
  121.     sp = 0;
  122. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin 
5
1
5
2
1
9
stdout 
data:1.000000
data:2.000000
answer:3.000000
https://ideone.com/2IAwVY
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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