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  1. #include <stdio.h>
  2. #define SIZE 10
  3. double stack[SIZE];
  4. int sp;
  5.  
  6. void push(double value);
  7. double pop(void);
  8. int isFull(void);
  9. int isEmpty(void);
  10. void answer(void);
  11. void reset(void);
  12.  
  13. int main(void)
  14. {
  15.     reset();
  16.  
  17.     int resp;
  18.     double data, a, b;
  19.  
  20.     while(1){
  21.  
  22.         scanf("%d", &resp);
  23.  
  24.         if(resp == 9) break;
  25.  
  26.         switch(resp){
  27.             case 1:
  28.                 b = pop();
  29.                 a = pop();
  30.                 push(a + b);
  31.                 break;
  32.  
  33.             case 2:
  34.                 b = pop();
  35.                 a = pop();
  36.                 push(a - b);
  37.                 break;
  38.  
  39.             case 3:
  40.                 b = pop();
  41.                 a = pop();
  42.                 push(a * b);
  43.                 break;
  44.  
  45.             case 4:
  46.                 b = pop();
  47.                 a = pop();
  48.                 push(a / b);
  49.                 break;
  50.  
  51.             case 5:
  52.                 scanf("lf", &data);
  53.                 printf("data%f\n", data);
  54.                 push(data);
  55.                 break;
  56.         }
  57.     }
  58.  
  59.     answer();
  60.     return 0;
  61. }
  62.  
  63. void push(double value)
  64. {
  65.     if(isFull()){
  66.         printf("スタックは満杯です\n");
  67.     }else{
  68.         stack[sp++] = value;
  69.     }
  70. }
  71.  
  72. double pop(void)
  73. {
  74.     double value;
  75.  
  76.     if(isEmpty()){
  77.         printf("スタックは空です\n");
  78.         return 0;
  79.     }else{
  80.         value = stack[--sp];
  81.         return value;
  82.     }
  83. }
  84.  
  85. int isFull(void)
  86. {
  87.     if(sp == SIZE){
  88.         return 1;
  89.     }else{
  90.         return 0;
  91.     }
  92. }
  93.  
  94. int isEmpty(void)
  95. {
  96.     if(sp == 0){
  97.         return 1;
  98.     }else{
  99.         return 0;
  100.     }
  101. }
  102.  
  103. void answer(void)
  104. {
  105.     if(isEmpty()){
  106.         printf("計算結果がありません\n");
  107.     }else{
  108.         printf("\nanswer:%f\n", stack[sp-1]);
  109.     }
  110. }
  111. void reset(void)
  112. {
  113.     sp = 0;
  114. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
copy 
5
1
5
2
1
9
stdout
copy 
data0.000000
スタックは空です
data0.000000
スタックは空です

answer:0.000000
https://ideone.com/bi0g5X
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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