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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. {
  12. 	sp=0;
  13. 	int resp, data;
  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 : "); scanf("%d",&data);
  23. 			            push(data);
  24. 			            break;
  25. 			case 2:     pop();
  26. 			            break;
  27. 		}
  28. 		printf("sp=%d\n",sp);
  29. 	}
  30. 	printf("\n");
  31. 	for(int i=0; i<sp; i++){
  32. 		printf("stack[%d]=%d \n", i, stack[i]);
  33. 	}
  34.  
  35. 	return 0;
  36. }
  37.  
  38.   void push(int value)
  39.   {
  40.   	   if(sp>=SIZE){
  41.   	   	   printf("スタックが満杯で入りませんでした\n");
  42.   	   }else{
  43.   	   	  stack[sp++] = value;
  44.   	   }
  45.   }
  46.  
  47.   int pop(void)
  48.   {
  49.   	if(sp<= 0){
  50.   		 printf("スタックがからで取り出せませんでした\n");
  51.   		 return 0;
  52.   	}else{
  53.   		return stack[--sp];
  54.   	}
  55.   	}
Success #stdin #stdout 0s 5268KB
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1
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stdout
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1:push  2:pop  0:end : push : sp=1
1:push  2:pop  0:end : 
stack[0]=4
https://ideone.com/v0z8PX
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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