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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.  
  15. int main(void){
  16.     reset();
  17.     int resp, date;
  18.     while(1){
  19.         //(1)
  20.         printf("1:+ 2:- 3:* 4:/ 5:push 9:answer\n");
  21.         scanf("%d", &resp);
  22.         if(resp==9){
  23.             break;
  24.         }
  25.         else{
  26.             switch(resp){
  27.                 case 1: 
  28.                     push(pop()+pop());
  29.                     break;
  30.                 case 2:
  31.                     push(pop()-pop());
  32.                     break;
  33.                 case 3:
  34.                     push(pop()*pop());
  35.                     break;
  36.                 case 4:
  37.                     push(pop()/pop());
  38.                     break;
  39.                 case 5:
  40.                     printf("push:\n");
  41.                     scanf("%d",&date);
  42.                     push(date);
  43.                     break;
  44.             }
  45.         }
  46.     }
  47.     answer();
  48.  
  49.     return 0;
  50. }
  51. void push(double value){
  52.     //(2)
  53.     if(isFull()!=0){
  54.         stack[sp++]=value;
  55.     }
  56.     printf("date:%f\n", stack[sp-1]);
  57. }
  58. double pop(void){
  59.     //(3)
  60.     if(isEmpty()!=0){
  61.         return stack[--sp];
  62.     }
  63.     else return 1;
  64. }
  65. int isFull(void){
  66.     //(4)
  67.     if(sp>=SIZE){
  68.         printf("スタックが満杯で入りませんでした\n");
  69.         return 0;
  70.     }
  71.     else return 1;
  72. }
  73. int isEmpty(void){
  74.     //(5)
  75.     if(sp<=0){
  76.         printf("スタックが空で取り出せませんでした\n");
  77.         return 0;
  78.     }
  79.     else return 1;
  80. }
  81. void answer(void){
  82.     //(6)
  83.     printf("answer:%f", stack[0]);
  84. }
  85. void reset(void){
  86.     //(7)
  87.     sp=0;
  88. }
  89.  
Success #stdin #stdout 0s 5316KB
comments (?)
stdin
copy 
5 1 5 2 1 9
stdout
copy 
1:+ 2:- 3:* 4:/ 5:push 9:answer
push:
date:1.000000
1:+ 2:- 3:* 4:/ 5:push 9:answer
push:
date:2.000000
1:+ 2:- 3:* 4:/ 5:push 9:answer
date:3.000000
1:+ 2:- 3:* 4:/ 5:push 9:answer
answer:3.000000
https://ideone.com/X1OPCR
911
language:
C99 (gcc 8.3)
created:
3 days ago
visibility:
public

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