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  1. #include <stdio.h>
  2. #define SIZE 10
  3. double stack[SIZE];
  4. int sp;
  5.  
  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. 	reset();
  15.     while (1) { 
  16.         int x;
  17.  
  18.         scanf("%d", &x);
  19.         if(!x){
  20.             break;
  21.         }
  22.  
  23.         if (x == 9) {
  24.             break;
  25.         }
  26.  
  27.         switch (x) {
  28.              case 1: {
  29.                 double b=pop();
  30.                 double a=pop();
  31.                 push(a + b);
  32.                 break;
  33.             }
  34.             case 2: {
  35.                 double b=pop();
  36.                 double a=pop();
  37.                 push(a - b);
  38.                 break;
  39.             }
  40.  
  41.             	case 3: {
  42.                 double b=pop();
  43.                 double a=pop();
  44.                 push(a * b);
  45.                 break;
  46.             }
  47.             case 4: {
  48.                 double b=pop();
  49.                 double a=pop();
  50.                 push(a / b);
  51.                 break;
  52.             }
  53.             case 5: {
  54.                 double data;
  55.                 scanf("%lf", &data);
  56.                 push(data);
  57.             printf("data:%.6f\n", data);
  58.                 break;
  59.             }
  60.         }
  61.     }
  62. answer();
  63.  
  64. 	return 0;
  65. }
  66.  
  67. void push(double value){
  68. 	if(sp >= SIZE){
  69. 	printf("スタックが満杯で入りませんでした。\n");
  70. 	}
  71. 	else{
  72. 		stack[sp++] = value;
  73. 	}
  74. 	}
  75. double pop(void){
  76. 	if(sp <= 0){
  77. 		printf("スタックが空で取り出せませんでした。\n");
  78. 		return 0;
  79. 	}
  80. 	else{
  81. 		return stack[--sp];
  82. 	}
  83. }	
  84. int isFull(void)
  85. {
  86. 	if(sp >= SIZE){
  87. 		return 1;}
  88. 		else{
  89. 			return 0;
  90. 		}
  91. 		}
  92. int isEmpty(void){
  93. 	if(sp <= 0){
  94. 		return 1;
  95. 	}
  96. 	else{
  97. 		return 0;
  98. 	}
  99. }		
  100.  
  101. void answer(void){
  102.   printf("answer:%.6f\n", pop());
  103. }
  104. void reset(void){
  105. 	sp=0;
  106. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin 
5
1
5
2
1
9
stdout 
data:1.000000
data:2.000000
answer:3.000000
https://ideone.com/YFUOs5
language:
C99 (gcc 8.3)
created:
4 hours ago
visibility:
public

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