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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. 	int resp;
  18. 	double data,a,b;
  19.  
  20. 	while(1){
  21. 		scanf("%d",&resp);
  22. 		if(resp==9) break;
  23. 		switch(resp){
  24. 			case 1:b=pop();
  25. 			       a=pop();
  26. 			       push(a+b);
  27. 			       break;
  28. 			case 2:b=pop();
  29. 			       a=pop();
  30. 			       push(a-b);
  31. 			       break;
  32. 			case 3:b=pop();
  33. 			       a=pop();
  34. 			       push(a*b);
  35. 			       break;
  36. 			case 4:b=pop();
  37. 			       a=pop();
  38. 			       push(a/b);
  39. 			       break;
  40. 			case 5:scanf("%lf",&data);
  41. 			       push(data);
  42. 			       printf("data:%lf\n",data);
  43. 			       break;
  44. 		}
  45. 	}
  46. 	answer();
  47. 	return 0;
  48. }
  49. void push(double value){
  50. 	if(isFull()){
  51. 		printf("スタックが満杯で入りませんでした\n");
  52. 	}else{
  53. 		stack[sp++]=value;
  54. 	}
  55. }
  56. double pop(void){
  57. 	if(isEmpty()){
  58. 		printf("スタックが空で取り出せませんでした\n");
  59. 		return 0;
  60. 	}else{
  61. 		return stack[--sp];
  62.     }
  63. }
  64. int isFull(void){
  65. 	if(sp>=SIZE){
  66. 		return 1;
  67. 	}else{
  68. 		return 0;
  69. 	}
  70. }
  71. int isEmpty(void){
  72. 	if(sp<=0){
  73. 		return 1;
  74. 	}else{
  75. 		return 0;
  76. 	}
  77. }
  78. void answer(void){
  79. 	printf("answer:%f\n",stack[sp-1]);
  80. }
  81. void reset(void){
  82. 	sp=0;
  83. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
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5
1
5
2
1
9
stdout
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data:1.000000
data:2.000000
answer:3.000000
https://ideone.com/jLePy4
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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