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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.  while(1){
  18.         double data;
  19.         double cal1, cal2;
  20.         int resp;
  21.  
  22.         scanf("%d", &resp);
  23.  
  24.         if( resp == 9 )  break;
  25.  
  26.         switch(resp){
  27.             case 1: cal1 = pop();
  28.                     cal2 = pop();
  29.                     push( cal2 + cal1 );
  30.                     break;
  31.  
  32.             case 2: cal1 = pop();
  33.                     cal2 = pop();
  34.                     push( cal2 - cal1 );
  35.                     break;
  36.  
  37.             case 3: cal1 = pop();
  38.                     cal2 = pop();
  39.                     push( cal2 * cal1 );
  40.                     break;
  41.  
  42.             case 4: cal1 = pop();
  43.                     cal2 = pop();
  44.                     push( cal2 / cal1 );
  45.                     break;
  46.  
  47.             case 5: printf("data:"); scanf("%lf", &data);
  48.                     push( data );
  49.                     printf("%lf\n", data);
  50.                     break;
  51.         }
  52.     }
  53.  
  54.     answer();
  55.  
  56.     return 0;
  57. }
  58. void push(double value)
  59. {
  60.     if( isFull() ){
  61.         printf("スタックが満杯で入りませんでした\n");
  62.     }else{
  63.         stack[sp++] = value;
  64.     }
  65. }
  66.  
  67. double pop(void)
  68. {
  69.     if( isEmpty() ){
  70.         printf("スタックが空で取り出せませんでした\n");
  71.         return 0;
  72.     }else{
  73.         return stack[--sp];
  74.     }
  75. }
  76.  
  77. int isFull(void)
  78. {
  79.     if(sp >= SIZE){
  80.         return 1;
  81.     }else{
  82.         return 0;
  83.     }
  84. }
  85.  
  86. int isEmpty(void)
  87. {
  88.     if(sp <= 0){
  89.         return 1;
  90.     }else{
  91.         return 0;
  92.     }
  93. }
  94.  
  95. void answer(void)
  96. {
  97.     printf ("\n");
  98.     printf ("answer:%lf\n", stack[0]);
  99. }
  100.  
  101. void reset(void)
  102. {
  103.     while(!isEmpty())
  104.         pop();
  105. }
  106.  
Success #stdin #stdout 0s 592KB
comments (?)
stdin
copy 
5
1
5
2
1
9
stdout
copy 
data:1.000000
data:2.000000

answer:3.000000
https://ideone.com/mmtdDj
language:
C (gcc 8.3)
created:
5 minutes ago
visibility:
public

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