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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;
  17.     double cal1,cal2, date;
  18.     reset(); 
  19.     while(1){
  20.     printf("1:+ 2:- 3:* 4:/ 5:データ入力 9:結果表示\n");
  21.     scanf("%d", &resp); 
  22.     switch(resp){
  23.     case 1:
  24.     cal1 = pop();
  25.     cal2 = pop();
  26.     push(cal2+cal1);
  27.     break;
  28.  
  29.     case 2:
  30.     cal1 = pop();
  31.     cal2 = pop();
  32.     push(cal2-cal1);
  33.     break;
  34.  
  35.     case 3:
  36.     cal1 = pop();
  37.     cal2 = pop();
  38.     push(cal2*cal1);
  39.     break;
  40.  
  41.     case 4:
  42.     cal1 = pop();
  43.     cal2 = pop();
  44.     push(cal2/cal1);
  45.     break;
  46.  
  47.     case 5:
  48.     printf("データ=");
  49.     scanf("%lf", &date);
  50.     push(date);
  51.     break;
  52.  
  53.     case 9:
  54.     answer();
  55.     return 0;
  56.     }
  57.     }
  58.  
  59.     answer();
  60.  
  61.     return 0;
  62. }
  63.  
  64. void push(double value)
  65. {
  66.     if(isFull()){
  67.     printf("スタックが満杯です\n");
  68.     return;
  69.     }
  70.  
  71.     stack[sp] = value;
  72.     sp++;
  73. }
  74.  
  75. double pop(void)
  76. {
  77.     if(isEmpty()){
  78.     printf("スタックが空です\n");
  79.     return 0;
  80.     }
  81.  
  82.     sp--;
  83.     return stack[sp];
  84. }
  85.  
  86. int isFull(void)
  87. {
  88.     if(sp >= SIZE){
  89.         return 1;
  90.     }else{
  91.         return 0;
  92.     }
  93. }
  94.  
  95. int isEmpty(void)
  96. {
  97.     if(sp == 0){
  98.         return 1;
  99.     }else{
  100.         return 0;
  101.     }
  102. }
  103.  
  104. void answer(void)
  105. {
  106.     if(isEmpty()){
  107.     printf("データがありません\n");
  108.     }else{
  109.     printf("計算結果 = %.2f\n", stack[sp-1]);
  110.     }
  111. }
  112.  
  113. void reset(void)
  114. {
  115.     sp = 0;
  116. }
  117.  
Success #stdin #stdout 0s 5316KB
comments (?)
stdin 
5
1
5
2
1
9
stdout 
1:+ 2:- 3:* 4:/ 5:データ入力 9:結果表示
データ=1:+ 2:- 3:* 4:/ 5:データ入力 9:結果表示
データ=1:+ 2:- 3:* 4:/ 5:データ入力 9:結果表示
1:+ 2:- 3:* 4:/ 5:データ入力 9:結果表示
計算結果 = 3.00
https://ideone.com/OXNWHl
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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