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  1. #include<stdio.h>
  2. #define SIZE 10
  3. double stack[SIZE];
  4. int sp;
  5. void push(double value);
  6. double pop(void);
  7. int isFull(void);
  8. int isEmpty(void);
  9. void answer(void);
  10. void reset(void);
  11. int main(void)
  12. {
  13. reset();
  14. sp=2;
  15. stack[0]=2;
  16. stack[1]=3;
  17.  
  18. int resp;
  19. double a,b,c;
  20. while(1){
  21. 	printf("1:足し算 2:引き算 3:掛け算 4:割り算 5:データ入力 9:計算結果の表示\n");
  22. 		if (scanf("%d", &resp) != 1) break;
  23. 		if(!resp) break;
  24.  
  25. 		switch(resp){
  26. 			case 1:printf("足し算\n");
  27. 			b=pop();
  28. 			printf("%lf\n",b);
  29. 			a=pop();
  30. 			printf("%lf\n",a);
  31. 			push(a+b);
  32. 			break;
  33. 			case 2:printf("引き算\n");
  34. 			b=pop();
  35. 			a=pop();
  36. 			push(a-b);
  37. 			break;
  38. 			case 3:printf("	掛け算\n");
  39. 			b=pop();
  40. 			a=pop();
  41. 			push(a*b);
  42. 			break;
  43. 			case 4:printf("割り算\n");
  44. 			b=pop();
  45. 			a=pop();
  46. 			push(a/b);
  47. 			break;
  48. 			case 5:printf("データ入力");
  49. 			scanf("%d",&c);
  50. 			push(c);
  51. 			break;
  52. 		}
  53. 		printf("%d\n",sp);
  54. 	answer();
  55. 	return 0;
  56. }
  57. }
  58.  
  59. void push(double value){
  60. 	if (!isFull()){
  61.         stack[sp] = value;
  62.         sp++;
  63.     }
  64. }
  65. double pop(void){
  66. 	if (!isEmpty()) {
  67.         sp--;
  68.         return stack[sp];
  69.     }
  70.     return 0;
  71. }
  72. int isFull(void){
  73. 	if (sp >= SIZE) {
  74.         return 1;
  75.     } else {
  76.         return 0;
  77.     }
  78. }
  79. int isEmpty(void){
  80. 	if (sp == 0) {
  81.         return 1;
  82.     } else {
  83.         return 0;
  84.     }
  85. }
  86. void answer(void){
  87. 	if (!isEmpty()) {
  88.         printf("answer:%lf\n", stack[sp - 1]);
  89.     }
  90. }
  91. void reset(void){
  92. 	sp = 0;
  93. }
Success #stdin #stdout 0s 5316KB
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stdin
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3
stdout
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1:足し算 2:引き算 3:掛け算 4:割り算 5:データ入力 9:計算結果の表示
	掛け算
1
answer:6.000000
https://ideone.com/uc24fb
language:
C (clang 8.0)
created:
5 hours ago
visibility:
public

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