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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. 	reset();
  17. 	while(1){
  18. 		int resp;
  19. 		double data, d1, d2;
  20.  
  21. 		if(scanf("%d",&resp)!=1)break;
  22.  
  23. 		scanf("%d",&resp);
  24.  
  25. 		if(resp==9){
  26. 			break;
  27. 		}
  28.  
  29. 		switch(resp){
  30. 			case 1:
  31. 				d2=pop();
  32. 				d1=pop();
  33. 				push(d1+d2);
  34. 				break;
  35.  
  36. 			case 2:
  37. 				d2=pop();
  38. 				d1=pop();
  39. 				push(d1-d2);
  40. 				break;
  41.  
  42. 			case 3:
  43. 				d2=pop();
  44. 				d1=pop();
  45. 				push(d1*d2);
  46. 				break;
  47.  
  48. 			case 4:
  49. 				d2=pop();
  50. 				d1=pop();
  51. 				push(d1/d2);
  52. 				break;
  53.  
  54. 			case 5:
  55. 				scanf("%lf",&data);
  56. 				printf("data:%f\n",data);
  57. 				push(data);
  58. 				break;
  59.  
  60. 			default:
  61. 				break;
  62. 		}
  63. 	}
  64.  
  65. 	answer();
  66. 	return 0;
  67. }
  68.  
  69. void push(double value){
  70. 	if(isFull()){
  71. 		printf("スタックが満杯で入りませんでした\n");
  72. 	}else{
  73. 			stack[sp++]=value;
  74. 	}
  75. }
  76.  
  77. double pop(void){
  78. 	if(isEmpty()){
  79. 		printf("スタックが空で取り出せませんでした\n");
  80. 		return 0;
  81. 	}else{
  82. 		return stack[--sp];
  83. 	}
  84. }
  85.  
  86. int isFull(void){
  87. 	if(sp<=0){
  88. 		return 1;
  89. 	}else{
  90. 		return 0;
  91. 	}
  92. }
  93.  
  94. int isEmpty(void){
  95. 	if(sp<=0){
  96. 		return 1;
  97. 	}else{
  98. 		return 0;
  99. 	}
  100. }
  101.  
  102. void answer(void){
  103. 	printf("\nanswer:%f\n",pop());
  104. }
  105.  
  106. void reset(void){
  107. 	sp=0;
  108. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
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Standard input is empty
stdout
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スタックが空で取り出せませんでした

answer:0.000000
https://ideone.com/nMT4YT
language:
C99 (gcc 8.3)
created:
1 day ago
visibility:
public

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