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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.     printf("1:+ 2:- 3:* 4:/ 5:data 9:end\n");
  18.     double a,b;
  19.  
  20. while(1){
  21. 	int resp;
  22.     double data;
  23.  
  24. 	scanf("%d", &resp);
  25.    	if(resp == 9) break;
  26.  
  27.    switch(resp){
  28.  
  29.  
  30.    	case 1:push(pop() + pop()); break;
  31.  
  32.    	case 2:a = pop(); b = pop();
  33.    	       push(b - a); break;
  34.  
  35.    	case 3:push(pop() * pop()); break;
  36.  
  37.    	case 4:a = pop(); b = pop();
  38.    	       push(b / a); break;
  39.  
  40.    	case 5:printf("push:"); scanf("%lf", &data); printf("%lf\n", data); push(data); break;
  41.  
  42.    }
  43. }
  44.     answer();
  45.  
  46.     return 0;
  47. }
  48.  
  49. void push(double value){
  50. 	if(isFull){
  51. 		printf("スタック満杯\n");
  52. 	}
  53. 	else{
  54. 		stack[sp++] = value;
  55. 	}
  56. }
  57.  
  58. double pop(void){
  59. 	if(isEmpty){
  60. 		printf("スタック空\n");
  61. 		return 0;
  62. 	}
  63. 	else{
  64. 		return stack[--sp];
  65. 	}
  66. }
  67.  
  68. int isFull(void){
  69. 	if(sp >= SIZE){
  70. 		return 1;
  71. 	}
  72. 	else{
  73. 		return 0;
  74. 	}
  75. }
  76.  
  77. int isEmpty(void){
  78. 	if(sp <= 0){
  79. 		return 1;
  80. 	}
  81. 	else{
  82. 		return 0;
  83. 	}
  84. }
  85.  
  86. void answer(void){
  87. 	printf("計算結果：%lf", stack[0]);
  88. 	return;
  89. }
  90.  
  91. void reset(void){
  92. 	sp = 0;
  93. 	return;
  94. }
  95.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
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5 3 5 2 1 9
stdout
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1:+ 2:- 3:* 4:/ 5:data 9:end
push:3.000000
スタック満杯
push:2.000000
スタック満杯
スタック空
スタック空
スタック満杯
計算結果：0.000000
https://ideone.com/DvLFfh
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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