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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.     while(1){
  19.          int n;
  20.          double x,y;
  21.          scanf("%d",&n);
  22.  
  23.          switch(n){
  24.             case 1:
  25.                  y=pop();
  26.                  x=pop();
  27.                  push(x+y);
  28.                  break;
  29.             case 2:
  30.                  y=pop();
  31.                  x=pop();
  32.                  push(x-y);
  33.                  break;
  34.             case 3:
  35.                  y=pop();
  36.                  x=pop();
  37.                  push(x*y);
  38.                  break;
  39.             case 4:
  40.                  y=pop();
  41.                  x=pop();
  42.                  push(x/y);
  43.                  break;
  44.             case 5:
  45.                  scanf("%lf",&x);
  46.                  push(x);
  47.                  printf("data:%f\n",x);
  48.                  break;
  49.             case 9:
  50.                  answer();
  51.                  return 0;
  52.         }
  53.     }
  54. }
  55.  
  56. void push(double value)
  57. {
  58.     if(isFull()){
  59.        printf("キューは満杯で入りませんでした\n");
  60.     }else{
  61.          stack[sp++]=value;
  62.     }
  63. }
  64.  
  65. double pop(void)
  66. {
  67.     if(isEmpty()){
  68.        printf("キューは空で取り出せませんでした\n");
  69.        return 0.0;
  70.     }else{
  71.          return stack[--sp];
  72.     }
  73. }
  74.  
  75. int isFull(void)
  76. {
  77.     return sp >= SIZE;
  78. }
  79.  
  80. int isEmpty(void)
  81. {
  82.     return sp <= 0;
  83. }
  84.  
  85. void answer(void)
  86. {
  87.     if(!isEmpty()){
  88.         printf("answer:%f\n",pop());
  89.     }
  90. }
  91.  
  92. void reset(void)
  93. {
  94.     sp=0;
  95. }
Success #stdin #stdout 0.01s 5276KB
comments (?)
stdin
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5 1 5 2 1 9
stdout
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data:1.000000
data:2.000000
answer:3.000000
https://ideone.com/nPJB78
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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