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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.  
  18.  while(1){
  19.  	int menu;
  20.  	double value,data1,data2;
  21.  
  22.  	scanf("%d",&menu);
  23.  	if(menu==9){
  24.  		break;
  25.  	}
  26.  	switch(menu){
  27.  		case 1:
  28.  		data2=pop();
  29.  		data1=pop();
  30.  		push(data1+data2);
  31.  		break;
  32.  		case 2:
  33.  		data2=pop();
  34.  		data1=pop();
  35.  		push(data1-data2);
  36.  		break;
  37.  		case 3:
  38.  		data2=pop();
  39.  		data1=pop();
  40.         push(data1*data2);
  41.         break;
  42.         case 4:
  43.         data2=pop();
  44.         data1=pop();
  45.         push(data1/data2);
  46.         break;
  47.         case 5:
  48.         scanf("%lf",&value);
  49.         printf("data:%f\n",value);
  50.         push(value);
  51.         break;
  52.  	}
  53.    }
  54.     answer();
  55.  
  56.     return 0;
  57. }
  58. void push(double value)
  59. {
  60. if (!isFull()) {
  61.     stack[sp] = value;
  62.     sp++;
  63. }
  64. }
  65.  
  66. double pop(void)
  67. {
  68. if (!isEmpty()) {
  69.     sp--;
  70.     return stack[sp];
  71. }
  72. return 0;
  73. }
  74.  
  75. int isFull(void)
  76. {
  77. 	if (sp >= SIZE) {
  78.     return 1;
  79. } else {
  80.     return 0;
  81. }
  82. }
  83.  
  84. int isEmpty(void)
  85. {
  86. 	if (sp == 0) {
  87.     return 1;
  88. } else {
  89.     return 0;
  90. }
  91. }
  92.  
  93. void answer(void)
  94. {
  95. printf("answer:%f\n", stack[sp - 1]);
  96. }
  97.  
  98. void reset(void)
  99. {
  100. sp = 0;
  101. }
  102.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
copy 
5
1
5
2
1
9
stdout
copy 
data:1.000000
data:2.000000
answer:3.000000
https://ideone.com/yEdXyT
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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