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  1. #include <stdio.h>
  2.  
  3. #define SIZE 10
  4.  
  5. double stack[SIZE];
  6. int sp;
  7.  
  8. void push(double value);
  9. double pop(void);
  10. int isFull(void);
  11. int isEmpty(void);
  12. void answer(void);
  13. void reset(void);
  14.  
  15. int main(void)
  16. {
  17.     int resp;
  18.     double data, cal1, cal2;
  19.  
  20.     reset();
  21.  
  22.    while(1){
  23.         double data;
  24.         double cal1, cal2;
  25.         int resp;
  26.  
  27.         scanf("%d", &resp);
  28.  
  29.         if( resp == 9 )  break;
  30.  
  31.         switch(resp){
  32.             case 1: cal1 = pop();
  33.                     cal2 = pop();
  34.                     push( cal2 + cal1 );
  35.                     break;
  36.  
  37.             case 2: cal1 = pop();
  38.                     cal2 = pop();
  39.                     push( cal2 - cal1 );
  40.                     break;
  41.  
  42.             case 3: cal1 = pop();
  43.                     cal2 = pop();
  44.                     push( cal2 * cal1 );
  45.                     break;
  46.  
  47.             case 4: cal1 = pop();
  48.                     cal2 = pop();
  49.                     push( cal2 / cal1 );
  50.                     break;
  51.  
  52.             case 5: printf("data:"); scanf("%lf", &data);
  53.                     push( data );
  54.                     printf("%lf\n", data);
  55.                     break;
  56.         }
  57.     }
  58.  
  59.     answer();
  60.  
  61.     return 0;
  62. }
  63.  
  64. void push(double value)
  65. {
  66.     if( isFull() ){
  67.         printf("スタックが満杯で入りませんでした\n");
  68.     }else{
  69.         stack[sp++] = value;
  70.     }
  71. }
  72.  
  73. double pop(void)
  74. {
  75.     if( isEmpty() ){
  76.         printf("スタックが空で取り出せませんでした\n");
  77.         return 0;
  78.     }else{
  79.         return stack[--sp];
  80.     }
  81. }
  82.  
  83. int isFull(void)
  84. {
  85.     if(sp >= SIZE){
  86.         return 1;
  87.     }else{
  88.         return 0;
  89.     }
  90. }
  91.  
  92. int isEmpty(void)
  93. {
  94.     if(sp <= 0){
  95.         return 1;
  96.     }else{
  97.         return 0;
  98.     }
  99. }
  100.  
  101. void answer(void)
  102. {
  103.     printf ("\n");
  104.     printf ("answer:%lf\n", stack[0]);
  105. }
  106.  
  107. void reset(void)
  108. {
  109.     while(!isEmpty())
  110.         pop();
  111. }
  112.  
Success #stdin #stdout 0s 5360KB
comments (?)
stdin 
5
1
5
2
1
9
stdout 
data:1.000000
data:2.000000

answer:3.000000
https://ideone.com/HHZbmY
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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