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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.  
  18.     while(1){
  19.         double data;
  20.         double cal1, cal2;
  21.         int resp;
  22.  
  23.         scanf("%d", &resp);
  24.  
  25.         if( resp == 9 ) break;
  26.  
  27.         switch(resp){
  28.             case 1: cal1 = pop();
  29.                     cal2 = pop();
  30.                     push(cal1 + cal2 );
  31.                     break;
  32.  
  33.             case 2: cal1 = pop();
  34.                     cal2 = pop();
  35.                     push(cal1 - cal2 );
  36.                     break;
  37.  
  38.             case 3: cal1 = pop();
  39.                     cal2 = pop();
  40.                     push(cal1 * cal2 );
  41.                     break;
  42.  
  43.             case 4: cal1 = pop();
  44.                     cal2 = pop();
  45.                     push(cal1 / cal2 );
  46.                     break;
  47.  
  48.             case 5: scanf("%lf", &data);
  49.                     push( data );
  50.                     printf("%lf\n", data);
  51.                     break;
  52.         }
  53.     }
  54.  
  55.     answer();
  56.  
  57.     return 0;
  58. }
  59.  
  60. void push(double value)
  61. {
  62.     if(isFull()){
  63.         printf("スタックが満杯で入りませんでした\n");
  64.     }else{
  65.         stack[sp++] = value;
  66.     }
  67. }
  68.  
  69. double pop(void)
  70. {
  71.     if(isEmpty()){
  72.         printf("スタックが空で取り出せませんでした\n");
  73.         return 0;
  74.     }else{
  75.         return stack[--sp];
  76.     }
  77. }
  78.  
  79. int isFull(void)
  80. {
  81.     if(sp >= SIZE){
  82.         return 1;
  83.     }else{
  84.         return 0;
  85.     }
  86. }
  87.  
  88. int isEmpty(void)
  89. {
  90.     if(sp <= 0){
  91.         return 1;
  92.     }else{
  93.         return 0;
  94.     }
  95. }
  96.  
  97. void answer(void)
  98. {
  99.     printf("\n");
  100.     printf("answer:%lf\n", stack[0]);
  101. }
  102.  
  103. void reset(void)
  104. {
  105.     while(!isEmpty())
  106.         pop();
  107. }
  108.  
Success #stdin #stdout 0s 5328KB
comments (?)
stdin
copy 
5
1
5
2
1
9
stdout
copy 
1.000000
2.000000

answer:3.000000
https://ideone.com/Dr5nsG
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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