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  1. #include<stdio.h>
  2.  
  3. #define SIZE 5
  4. double stack[SIZE];
  5. int sp;
  6. double pop(void);
  7. void push(double value);
  8.  
  9. int isFull(void);
  10. int isEmpty(void);
  11. void display(void);
  12. void initialize(void);
  13. int main(void)
  14. {
  15.     sp = 0;
  16.     int resp, data;
  17. 	double a,b;
  18.     while(1){
  19.         printf("1:+  2:- 3:* 4:/ 5:data input  0:end 9:display ");
  20.         scanf("%d", &resp);
  21.  
  22.         if(resp == 9) break;
  23.  
  24.         switch(resp){
  25.             case 1: //足し算
  26.                 a = pop();
  27.                 b = pop();
  28.                 push(a + b);
  29.                 break;
  30.             case 2: //引き算
  31.                 a = pop();
  32.                 b = pop();
  33.                 push(a - b);
  34.                 break;
  35.             case 3: //掛け算
  36.                 a = pop();
  37.                 b = pop();
  38.                 push(a * b);
  39.                 break;
  40.             case 4: //割り算
  41.                 a = pop();
  42.                 b = pop();
  43.                 push(a / b);
  44.                 break;
  45.             case 5: 
  46.                 printf("push : ");
  47.                 scanf("%d", &data);
  48.                 push(data);
  49.                 printf("data=%d\n", data);
  50.                 break;
  51.         }
  52.  
  53.     }
  54.  
  55.     printf("\n");
  56.     display();
  57.     return 0;
  58. }
  59.  
  60. void initialize(void){
  61.     sp = 0;
  62. }
  63.  
  64. void display(void){
  65.     for(int i=0; i<sp; i++){
  66.         printf("answer:%lf\n",stack[i]);
  67.     }
  68. }
  69.  
  70. int isFull(void){
  71.     if(sp >= SIZE){
  72.         return 1;
  73.     }else{
  74.         return 0;
  75.     }
  76. }
  77.  
  78. int isEmpty(void){
  79.     if(sp <= 0){
  80.         return 1;
  81.     }else{
  82.         return 0;
  83.     }
  84. }
  85.  
  86. void push(double value)
  87. {
  88.     if(isFull()){
  89.         printf("スタックが満杯で入りませんでした\n");
  90.     }else{
  91.         stack[sp++] = value;
  92.     }
  93. }
  94.  
  95. double pop(void)
  96. {
  97.     if(isEmpty()){
  98.         printf("スタックが空で取り出せませんでした\n");
  99.         return 0;
  100.     }else{
  101.         return stack[--sp];
  102.     }
  103. }
Success #stdin #stdout 0s 5224KB
comments (?)
stdin
copy 
5
1
5
2
1
9
stdout
copy 
1:+  2:- 3:* 4:/ 5:data input  0:end 9:display push : data=1
1:+  2:- 3:* 4:/ 5:data input  0:end 9:display push : data=2
1:+  2:- 3:* 4:/ 5:data input  0:end 9:display 1:+  2:- 3:* 4:/ 5:data input  0:end 9:display 
answer:3.000000
https://ideone.com/QWu3J7
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

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