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  1. #include <stdio.h>
  2.  
  3. #define SIZE 5
  4. int stack[SIZE];
  5. int sp;
  6.  
  7. void push(int value);
  8. int pop(void);
  9.  
  10. int main(void) {
  11.     int resp, data;
  12.  
  13.     sp = 0;
  14.  
  15.     while(1){
  16.         printf("1: push  2: pop 0: end : ");
  17.         scanf("%d",&resp);
  18.  
  19.         if(!resp) break;
  20.  
  21.         switch(resp){
  22.             case 1: printf("push : "); 
  23.             scanf("%d", &data);
  24.                     push(data);
  25.                     break;
  26.             case 2: pop();
  27.                     break;
  28.         }
  29.     }
  30.  
  31.     printf("\n");
  32.     for(int i=0; i<SIZE; i++)
  33.         printf("stack[%d]=%d \n", i, stack[i]);
  34.  
  35.     return 0;
  36. }
  37. void push(int value)
  38. {
  39.     if(sp >= SIZE){
  40.         printf("スタックが満杯で入りませんでした\n");
  41.     }else{
  42.         stack[sp++] = value;
  43.     }
  44. }
  45.  
  46. int pop(void)
  47. {
  48.     if(sp <= 0){
  49.         printf("スタックが空で取り出せませんでした\n");
  50.         return 0;
  51.     }else{
  52.         return stack[--sp];
  53.     }
  54. }
  55.  
  56.  
  57.  
Success #stdin #stdout 0s 5284KB
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stdout
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1: push  2: pop 0: end : push : 1: push  2: pop 0: end : 
stack[0]=2 
stack[1]=0 
stack[2]=0 
stack[3]=0 
stack[4]=0
https://ideone.com/os0YbQ
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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