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  1. #include <stdio.h>
  2.  
  3. #define SIZE 10
  4. double stack [SIZE];
  5. int sp;
  6.  
  7. void push(double value);
  8. double pop(void);
  9. int isFull(void);
  10. int isEmpty(void);
  11. void answer(void);
  12. void reset(void);
  13.  
  14. int main(void)
  15. {
  16. reset();
  17.  
  18.   sp=0;
  19.   int resp;
  20.   double data;
  21.  
  22. while(1) 
  23. {
  24.   scanf("%d", &resp);
  25.  
  26.   if(resp==9) break;
  27.  
  28.   int cal1,cal2;
  29.  
  30.   switch(resp)
  31. {
  32.      case 1: 
  33.        cal1=pop();     
  34.        cal2=pop(); 
  35.        push(cal2+cal1);
  36.        break;
  37.      case 2:
  38.        cal1=pop();
  39.        cal2=pop();
  40.        push(cal2-cal1);
  41.        break;
  42.      case 3:
  43.        cal1=pop();
  44.        cal2=pop();
  45.        push(cal2*cal1);
  46.        break;
  47.      case 4:
  48.        cal1=pop();
  49.        cal2=pop();
  50.        push(cal2/cal1);
  51.        break;
  52.      case 5:
  53.        scanf("%lf",& data);
  54.        printf("data:%lf\n",data);
  55.        push(data);
  56.        break;
  57. }
  58.  
  59.  
  60.  
  61. }
  62.  
  63.  
  64.  
  65.  
  66. answer();
  67. return 0;
  68.  
  69. }
  70.  
  71. void push(double value)
  72. {
  73.    if(isFull())
  74.  {
  75.   printf("スタックが満杯で入りませんでした\n");
  76.  }else
  77.  {
  78.  stack[sp++]=value;
  79.  }
  80. }
  81. double pop(void)
  82. { 
  83.  if(isEmpty())
  84.  { 
  85.    printf("スタックが空で取り出せませんでした\n");
  86.    return 0;
  87.  }else
  88.   { 
  89.    return stack [--sp];
  90.   }
  91. } 
  92. int isFull(void)
  93. {
  94.  if(sp>=SIZE)
  95.  {
  96.   return 1;
  97.  
  98.  }else
  99.   {return 0;
  100.    }
  101. }
  102.  
  103. int isEmpty(void) 
  104. {
  105.   if(sp<=0){
  106.  
  107.      return 1;
  108.  
  109. }else{
  110.  
  111.    return 0;
  112.  }
  113. }
  114.  
  115. void answer(void) {
  116.     printf("answer:%lf\n",stack[0]);
  117. }
  118.  
  119. void reset(void){
  120. while(isEmpty() == 0)
  121. pop();
  122. }
  123.  
  124.  
  125.  
Success #stdin #stdout 0s 5324KB
comments (?)
stdin
copy 
5 1 5 2 1 9
stdout
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data:1.000000
data:2.000000
answer:3.000000
https://ideone.com/8BXAuI
language:
C (gcc 8.3)
created:
3 hours ago
visibility:
public

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