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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.     sp=0;
  18.     int resp,date;
  19.  
  20.     while(1){
  21.          double x,y;
  22.          scanf("%d",&resp);
  23.  
  24.          switch(resp){
  25.             case 1:
  26.                  y=pop();
  27.                  x=pop();
  28.                  push(x+y);
  29.                  break;
  30.             case 2:
  31.                  y=pop();
  32.                  x=pop();
  33.                  push(x-y);
  34.                  break;
  35.             case 3:
  36.                  y=pop();
  37.                  x=pop();
  38.                  push(x*y);
  39.                  break;
  40.             case 4:
  41.                  y=pop();
  42.                  x=pop();
  43.                  push(x/y);
  44.                  break;
  45.             case 5:
  46.                  scanf("%lf",&x);
  47.                  push(x);
  48.                  printf("data:%f\n",x);
  49.                  break;
  50.             case 9:
  51.                  answer();
  52.                  return 0;
  53.         }
  54.     }
  55. }
  56.  
  57. void push(double value)
  58. {
  59.     if(isFull()){
  60.        printf("キューは満杯で入りませんでした\n");
  61.     }else{
  62.          stack[sp++]=value;
  63.     }
  64. }
  65.  
  66. double pop(void)
  67. {
  68.     if(isEmpty()){
  69.        printf("キューは空で取り出せませんでした\n");
  70.        return 0.0;
  71.     }else{
  72.          return stack[--sp];
  73.     }
  74. }
  75.  
  76. int isFull(void)
  77. {
  78.     return sp >= SIZE;
  79. }
  80.  
  81. int isEmpty(void)
  82. {
  83.     return sp <= 0;
  84. }
  85.  
  86. void answer(void)
  87. {
  88.     if(!isEmpty()){
  89.         printf("answer:%f\n",pop());
  90.     }
  91. }
  92.  
  93. void reset(void)
  94. {
  95.     sp=0;
  96. }
  97.  
Success #stdin #stdout 0s 5316KB
comments (?)
stdin 
5 2 5 1 1 9
stdout 
data:2.000000
data:1.000000
answer:3.000000
https://ideone.com/M4J06l
language:
C (gcc 8.3)
created:
5 hours ago
visibility:
public

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