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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. int main(void)
  13. {
  14. reset();
  15.  while(1){
  16.   double data,a,b;
  17.   int resp;
  18.   if (scanf("%d", &resp) == EOF|| resp == 0) {
  19.             break;
  20.         }
  21.    switch(resp){
  22.      case 1:a = pop();
  23.             b = pop();
  24.             push (b+a);
  25.             break;
  26.      case 2:a = pop();
  27.             b = pop();
  28.             push (b-a);
  29.             break;
  30.      case 3:a = pop();
  31.             b = pop();
  32.             push (b*a);
  33.             break;
  34.      case 4:a = pop();
  35.             b = pop();
  36.             push (b/a);
  37.             break;
  38.      case 5:scanf("%lf",&data);
  39.             printf("data:%f\n",data);
  40.             push(data);
  41.             break;
  42.      case 9:answer();
  43.             break;
  44.     default:
  45.      break;
  46.      }
  47.   }
  48.   answer ();
  49.   return 0;
  50. }
  51.  void push(double value)
  52. {
  53.   if(!isFull()){
  54.     stack[sp] = value;
  55.     sp++;
  56.    }
  57.  }
  58. double pop(void)
  59. {
  60.   if(!isEmpty()){
  61.     sp--;
  62.      return stack[sp];
  63.     }
  64.      return 0.0;
  65. }
  66. int isFull(void)
  67. {
  68.   return sp>= SIZE;
  69. }
  70. int  isEmpty(void)
  71. {
  72.     return sp <= 0;
  73. }
  74. void answer(void)
  75. {
  76.     if (sp > 0) {
  77.         printf("answer: %f\n", stack[sp - 1]);
  78.     }
  79. }
  80. void reset(void)
  81. {
  82.     sp = 0;
  83. }
  84.  
  85. 	// your code goes here
  86.  
  87.  
  88.  
Success #stdin #stdout 0s 5324KB
comments (?)
stdin
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5
1
5
2
4
9
stdout
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data:1.000000
data:2.000000
answer: 0.500000
answer: 0.500000
https://ideone.com/6Uf06F
language:
C (gcc 8.3)
created:
12 hours ago
visibility:
public

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