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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. 		if(scanf("%d", &resp) != 1) break; // 読み込みエラー・終了対策
  24.  
  25. 		if(resp == 9) break;
  26.  
  27. 		switch(resp){
  28. 			case 1: cal1 = pop();
  29. 					cal2 = pop();
  30. 					push(cal2 + cal1);
  31. 					break;
  32.  
  33. 			case 2: cal1 = pop();
  34. 					cal2 = pop();
  35. 					push(cal2 - cal1);
  36. 					break;
  37.  
  38. 			case 3: cal1 = pop();
  39. 					cal2 = pop();
  40. 					push(cal2 * cal1);
  41. 					break;
  42.  
  43. 			case 4: cal1 = pop();
  44. 					cal2 = pop();
  45. 					push(cal2 / cal1);
  46. 					break;
  47.  
  48. 			case 5: printf("data:");
  49. 					scanf("%lf", &data);
  50. 					push(data);
  51. 					printf("%lf\n", data);
  52. 					break;
  53. 		}
  54. 	}
  55.  
  56. 	answer();
  57.  
  58. 	return 0;
  59. }
  60.  
  61. void push(double value)
  62. {
  63. 	if(isFull()){
  64. 		printf("スタックが満杯で入りませんでした\n");
  65. 	}else{
  66. 		stack[sp++] = value;
  67. 	}
  68. }
  69.  
  70. double pop(void)
  71. {
  72. 	if(isEmpty()){
  73. 		printf("スタックが空で取り出せませんでした\n");
  74. 		return 0;
  75. 	}else{
  76. 		return stack[--sp];
  77. 	}
  78. }
  79.  
  80. int isFull(void)
  81. {
  82. 	if(sp >= SIZE){
  83. 		return 1;
  84. 	}else{
  85. 		return 0;
  86. 	}
  87. }
  88.  
  89. int isEmpty(void)
  90. {
  91. 	if(sp == 0){
  92. 		return 1;
  93. 	}else{
  94. 		return 0;
  95. 	}
  96. }
  97.  
  98. void answer(void)
  99. {
  100. 	printf("\n");
  101. 	printf("answer:%lf\n", stack[0]);
  102. }
  103.  
  104. void reset(void)
  105. {
  106. 	while(!isEmpty())
  107. 		pop();
  108. }
Success #stdin #stdout 0s 5352KB
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/noxewE
language:
C (gcc 8.3)
created:
8 hours ago
visibility:
public

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