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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 data) {
  8.     if (sp < SIZE) {
  9.         stack[sp++] = data;
  10.     } else {
  11.         printf("Stack Overflow\n");
  12.     }
  13. }
  14. void pop() {
  15.     if (sp > 0) {
  16.         sp--;
  17.         printf("popped: %d\n", stack[sp]);
  18.     } else {
  19.         printf("Stack Underflow\n");
  20.     }
  21. }
  22.  
  23.  
  24. int main(void)
  25. {
  26.     sp = 0;
  27.     int resp, data;
  28.  
  29.     while(1){
  30.         printf("1: push  2: pop  0: end : ");
  31.         scanf("%d", &resp);
  32.  
  33.         if(!resp) break;
  34.  
  35.         switch(resp){
  36.             case 1: printf("push : "); 
  37.             scanf("%d", &data);
  38.                     push( data );
  39.                     break;
  40.             case 2: pop();
  41.                     break;
  42.         }
  43.         printf("sp=%d\n", sp);
  44.     }
  45.  
  46.     printf("\n");
  47.     for(int i=0; i<sp; i++){
  48.         printf("stack[%d]=%d \n", i, stack[i]);
  49.     }
  50.  
  51.     return 0;
  52. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
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1
10
0
2
stdout
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1: push  2: pop  0: end : push : sp=1
1: push  2: pop  0: end : 
stack[0]=10
https://ideone.com/f0xy2U
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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