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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.     int resp,data;
  17.     double a,b,c;
  18.     reset();
  19.  
  20. while(1){
  21.      scanf("%d",&resp);
  22.  
  23.      switch(resp){
  24.            case 1:
  25.               b=pop();
  26.               a=pop();
  27.               push(a + b);
  28.               break;
  29.            case 2:
  30.               b=pop();
  31.               a=pop();
  32.               push(a - b);
  33.               break;
  34.            case 3:
  35.               b=pop();
  36.               a=pop();
  37.               push(a * b);
  38.               break;
  39.            case 4:
  40.               b=pop();
  41.               a=pop();
  42.               push(a / b);
  43.               break;
  44.            case 5:
  45.               scanf("%lf",&c);
  46.               printf("data:%lf\n",c); 
  47.               push(c);
  48.               break;
  49.            case 9:
  50.               answer();
  51.               return 0;
  52.            default:
  53.               break;
  54.       }
  55.    }
  56.    return 0;
  57. }
  58.  
  59. void push(double value){
  60.     if(sp >= SIZE){
  61.       printf("スタックが満杯です\n");
  62.     }else{
  63.         stack[sp++]=value;
  64.     }
  65. }
  66.  
  67. double pop(void){
  68.       if(sp<=0){
  69.         printf("スタックが空です\n");
  70.       }else{
  71.           return stack[--sp];
  72.       }
  73. }
  74.  
  75. int isFull(void){
  76.    if(sp>=SIZE){
  77.      return 1;
  78.    }else{
  79.      return 0;
  80.    }
  81. }
  82.  
  83. int isEmpty(void){
  84.    if(sp<=0){
  85.      return 1;
  86.    }else{
  87.      return 0;
  88.    }
  89. }
  90.  
  91. void answer(void){
  92.     if(!isEmpty()){
  93.       printf("answer:%f\n",stack[sp-1]);
  94.     }
  95. }
  96.  
  97. void reset(void){
  98.     sp=0;
  99. }
Success #stdin #stdout 0s 5324KB
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/NypAx3
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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