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  1. #include <stdio.h>
  2. #define SIZE 10
  3. double stack[SIZE];
  4. int sp;
  5.  
  6. void push(double value);
  7. double pop(void);
  8. int isFull(void);
  9. int isEmpty(void);
  10. void answer(void);
  11. void reset(void);
  12.  
  13.  
  14. int main(void) {
  15.  
  16.  reset();
  17.  
  18. while(1){
  19. 	double a, b, val;
  20. 	int kazu;
  21.  
  22.     scanf("%d", &kazu);
  23.     if (kazu == 9) {
  24.         break;
  25.     }
  26.  
  27.     switch (kazu) {
  28.         case 1:
  29.             b = pop();
  30.             a = pop();
  31.             push(a + b);
  32.             break;
  33.         case 2:
  34.             b = pop();
  35.             a = pop();
  36.             push(a - b);
  37.             break;
  38.         case 3:
  39.             b = pop();
  40.             a = pop();
  41.             push(a * b);
  42.             break;
  43.         case 4:
  44.             b = pop();
  45.             a = pop();
  46.             push(a / b);
  47.             break;
  48.         case 5:
  49.             scanf("%lf", &val);
  50.             push(val);
  51.             printf("data:%f\n", val);
  52.             break;
  53.     }
  54. }
  55.  
  56. answer();
  57.  
  58. return 0;
  59. }
  60. void push(double value)
  61. {
  62. if (!isFull()) {
  63.         stack[sp++] = value;
  64.     }
  65. }
  66. double pop(void)
  67. {
  68. 	if (!isEmpty()) {
  69.         return stack[--sp];
  70.     }
  71.     return 0;
  72. }
  73. int isFull(void)
  74. {
  75. 	if (sp>=SIZE)
  76. 	printf("スタックが満杯です\n");
  77. }
  78. int isEmpty(void)
  79. {
  80. 	if (sp<=0)
  81. 	printf("スタックが空です\n");
  82. }
  83. void answer(void)
  84. {
  85. if (sp > 0) {
  86.      printf("answer:%f\n", stack[sp - 1]);	
  87. }
  88. }
  89. void reset(void)
  90. {
  91. 	sp=0;
  92. }
  93.  
Success #stdin #stdout 0s 5284KB
comments (?)
stdin
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5
1
5
2
1
9
stdout
copy 
data:1.000000
data:2.000000
answer:3.000000
https://ideone.com/3f2JiD
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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