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  1. #include <stdio.h>//第１回提出課題
  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. int main() {
  14. 	reset();
  15. 	while(1){
  16. 		int resp;
  17. 		double data,a,b;
  18.  
  19. 		scanf("%d",&resp);
  20.  
  21. 		if(resp==9) break;
  22.  
  23. 		switch(resp){
  24. 			case 1:
  25. 			    b=pop();
  26. 			    a=pop();
  27. 			    push(a+b);
  28. 			    break;
  29. 			case 2:
  30. 			    b=pop();
  31. 			    a=pop();
  32. 			    push(a-b);
  33. 			    break;
  34. 			case 3:
  35. 			    b=pop();
  36. 			    a=pop();
  37. 			    push(a*b);
  38. 			    break;
  39. 			case 4:
  40. 			    b=pop();
  41. 			    a=pop();
  42. 			    push(a/b);
  43. 			    break;
  44. 			case 5:
  45. 			    scanf("%lf",&data);
  46. 			    printf("data:%f\n",data);
  47. 			    push(data);
  48. 			    break;
  49. 		}
  50.  
  51. 	}
  52.  
  53. 	answer();
  54.  
  55. 	return 0;
  56. }
  57.  
  58. void push(double value){
  59. 	if( isFull() ){
  60. 		printf("スタックが満杯で入りませんでした\n");
  61. 	}
  62. 	else{
  63. 		stack[sp++]=value;
  64. 	}
  65. }
  66.  
  67. double pop(void){
  68. 	if( isEmpty() ){
  69. 		printf("スタックが空で取り出せませんでした\n");
  70. 		return 0;
  71. 	}
  72. 	else{
  73. 		return stack[--sp];
  74. 	}
  75. }
  76.  
  77. int isFull(void){
  78. 	if(sp>=SIZE){
  79. 		return 1;
  80. 	}
  81. 	else{
  82. 		return 0;
  83. 	}
  84. }
  85.  
  86. int isEmpty(void){
  87. 	if(sp<=0){
  88. 		return 1;
  89. 	}
  90. 	else{
  91. 		return 0;
  92. 	}
  93. }
  94.  
  95. void answer(void){
  96. 	printf("\n");
  97. 	if(sp>0){
  98. 		printf("answer:%f\n",stack[sp-1]);
  99. 	}
  100. }
  101.  
  102. void reset(void){
  103. 	sp=0;
  104. }
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/nnDAQ3
language:
C (gcc 8.3)
created:
10 hours ago
visibility:
public

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