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  1. #include<stdio.h>
  2.  
  3. #define SIZE 10
  4. double stack[SIZE];
  5. int sp;
  6. void push(double value);
  7. double pop(void);
  8. int isFull(void);
  9. int isEmpty(void);
  10. void answer(void);
  11. void reset(void);
  12.  
  13. int main(void)
  14. {
  15. 	reset();
  16. 	int resp;
  17. 	double data;
  18.  
  19.  while(1){
  20.  	scanf("%d",&resp);
  21.  	if(resp==9) break;
  22.  
  23.  	switch(resp){
  24.  		case 5:scanf("%lf",&data);
  25.  		push(data);
  26.  		break;
  27.  		case 1:data=pop()+pop();
  28.  		push(data);
  29.  		break;
  30.  		case 2:data=pop()-pop();
  31.  		push(data);
  32.  		break;
  33.  		case 3:data=pop()*pop();
  34.  		push(data);
  35.  		break;
  36.  		case 4:data=pop()/pop();
  37.  		push(data);
  38.  		break;
  39.  	}
  40.    }
  41.     answer();
  42.     return 0;
  43. }
  44. void push(double value)
  45. {
  46. 	if(isFull()){
  47. 		printf("スタックが満杯で入りませんでした\n");
  48. 	}else{
  49. 		stack[sp++]=value;
  50. }}
  51. double pop(void)
  52. {
  53. 	if(isEmpty()){
  54. 		printf("スタックが空で取り出せませんでした\n");
  55. 		return 0;
  56. 	}else{
  57. 		return stack[--sp];
  58. 	}
  59. }
  60. int isFull(void)
  61. {
  62. 	if(sp>=SIZE){
  63. 		return 1;
  64. 	}else{
  65. 		return 0;
  66. 	}
  67. }
  68. int isEmpty(void)
  69. {
  70. 	if(sp<=0){
  71. 		return 1;
  72. 	}else{
  73. 		return 0;
  74. 	}
  75. }
  76. void answer(void)
  77. {
  78. 		printf("answer:%f \n",stack[0]);
  79. }
  80. void reset(void)
  81. {
  82. 	sp=0;
  83. }
Success #stdin #stdout 0.01s 5276KB
comments (?)
stdin
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5
1
5
2
1
9
stdout
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answer:3.000000
https://ideone.com/VOwtd6
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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