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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. 	int command;
  17. 	double value;
  18. 	double a, b;
  19.     reset();
  20.     while(1){
  21.     	scanf("%d", &command);
  22.     	if(command == 9){
  23.     		break;
  24.     	}
  25.     	switch(command){
  26.     		case 1:
  27.     		b = pop();
  28.     		a = pop();
  29.     		push(a + b);
  30.     		break;
  31.     			case 2:
  32.     			b = pop();
  33.     			a = pop();
  34.     			push(a -b);
  35.     			break;
  36.     				case 3:
  37.     				b = pop();
  38.     				a = pop();
  39.     				push(a * b);
  40.    					break;
  41.     					case 4:
  42.     					b = pop();
  43.     					a = pop();
  44.     					push(a / b);
  45.     					break;
  46.     						case 5:
  47.     						scanf("%lf", &value);
  48.     						push(value);
  49.     						printf("data:%f\n", value);
  50.     						break;
  51.     	}
  52.     }
  53.     answer();
  54.     return 0;
  55. }
  56. void push(double value){
  57. 		if(!isFull()){
  58. 			stack[sp] = value;
  59. 			sp++;
  60. 		}
  61. 	}
  62. 	double pop(void){
  63. 			if(!isEmpty()){
  64. 				sp--;
  65. 				return stack[sp];
  66. 			}
  67. 			return 0;
  68. 		}
  69. int isFull(void){
  70. 	return sp == SIZE;
  71. }
  72. int isEmpty(void){
  73. 	return sp == 0;
  74. }
  75. void answer(void){
  76. 	printf("answer:%f\n", pop());
  77. }
  78. void reset(void){
  79. 	sp = 0;
  80. }
Success #stdin #stdout 0s 5316KB
comments (?)
stdin
copy 
5
1
5
2
1
9
stdout
copy 
data:1.000000
data:2.000000
answer:3.000000
https://ideone.com/TtyFwl
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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