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  1. #include <stdio.h>
  2.  
  3. #include <stdio.h>
  4.  
  5. #define SIZE 5
  6.  
  7. double stack[SIZE];
  8. int sp;
  9.  
  10. void push(double value);
  11. double pop(void);
  12. int isFull(void);
  13. int isEmpty(void);
  14. void answer(void);
  15. void reset(void);
  16.  
  17. int main(void)
  18. {
  19.     int resp;
  20.     double data, cal1, cal2;
  21.  
  22.     reset();
  23.  
  24.     while(1){
  25.  
  26.  
  27.         scanf("%d", &resp);
  28.  
  29.         if(resp == 9)
  30.             break;
  31.  
  32.         switch(resp){
  33.  
  34.             case 1:
  35.                 cal1 = pop();
  36.                 cal2 = pop();
  37.                 push(cal2 + cal1);
  38.                 break;
  39.  
  40.             case 2:
  41.                 cal1 = pop();
  42.                 cal2 = pop();
  43.                 push(cal2 - cal1);
  44.                 break;
  45.  
  46.             case 3:
  47.                 cal1 = pop();
  48.                 cal2 = pop();
  49.                 push(cal2 * cal1);
  50.                 break;
  51.  
  52.             case 4:
  53.                 cal1 = pop();
  54.                 cal2 = pop();
  55.  
  56.                 if(cal1 == 0){
  57.                     printf("0では割れません\n");
  58.                     push(cal2);
  59.                     push(cal1);
  60.                 }
  61.                 else{
  62.                     push(cal2 / cal1);
  63.                 }
  64.                 break;
  65.  
  66.             case 5:
  67.                 printf("data : ");
  68.                 scanf("%lf", &data);
  69.                 printf("%lf\n",data);
  70.                 push(data);
  71.                 break;
  72.  
  73.             default:
  74.                 printf("入力エラー\n");
  75.         }
  76.  
  77.         //printf("sp=%d\n",sp);
  78.     }
  79.  
  80.     answer();
  81.  
  82.     return 0;
  83. }
  84.  
  85. void push(double value)
  86. {
  87.     if(isFull()){
  88.         printf("スタックが満杯で入りませんでした\n");
  89.     }
  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 0.0;
  100.     }
  101.     else{
  102.         return stack[--sp];
  103.     }
  104. }
  105.  
  106. int isFull(void)
  107. {
  108.     if(sp >= SIZE){
  109.         return 1;
  110.     }
  111.     else{
  112.         return 0;
  113.     }
  114. }
  115.  
  116. int isEmpty(void)
  117. {
  118.     if(sp <= 0){
  119.         return 1;
  120.     }
  121.     else{
  122.         return 0;
  123.     }
  124. }
  125.  
  126. void answer(void)
  127. {
  128.     if(sp > 0){
  129.         printf("\n計算結果 = %.6f\n", stack[sp-1]);
  130.     }
  131.     else{
  132.         printf("\nスタックが空です\n");
  133.     }
  134. }
  135.  
  136. void reset(void)
  137. {
  138.     sp = 0;
  139. }
  140.  
Success #stdin #stdout 0s 5304KB
comments (?)
stdin 
5
4
5
5
1
5
1
5
2
1
1
9
stdout 
data : 4.000000
data : 5.000000
data : 1.000000
data : 2.000000

計算結果 = 12.000000
https://ideone.com/q4nloh
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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