fork download
copy 
  1.  
  2. #include <stdio.h>
  3.  
  4. #define SIZE 10
  5.  
  6. double stack[SIZE];
  7. int sp;
  8.  
  9. void push(double value);
  10. double pop(void);
  11. int isFull(void);
  12. int isEmpty(void);
  13. void reset(void);
  14. void answer(void);
  15.  
  16. int main(void)
  17. {
  18.     int resp;
  19.     double data, a, b;
  20.  
  21.     reset();
  22.  
  23.     while(1){
  24.  
  25.         int result = scanf("%d", &resp);
  26.  
  27.         if(result == EOF){
  28.     break;
  29. }
  30.  
  31. if(result != 1){
  32.     printf("Invalid input\n");
  33.     break;
  34. }
  35.  
  36.         if(resp == 0) break;
  37.  
  38.         switch(resp){
  39.  
  40.             case 1:
  41.                 if(sp < 2){
  42.                     printf("Not enough data in stack\n");
  43.                     break;
  44.                 }
  45.                 b = pop();
  46.                 a = pop();
  47.                 push(a + b);
  48.                 break;
  49.  
  50.             case 2:
  51.                 if(sp < 2){
  52.                     printf("Not enough data in stack\n");
  53.                     break;
  54.                 }
  55.                 b = pop();
  56.                 a = pop();
  57.                 push(a - b);
  58.                 break;
  59.  
  60.             case 3:
  61.                 if(sp < 2){
  62.                     printf("Not enough data in stack\n");
  63.                     break;
  64.                 }
  65.                 b = pop();
  66.                 a = pop();
  67.                 push(a * b);
  68.                 break;
  69.  
  70.             case 4:
  71.                 if(sp < 2){
  72.                     printf("Not enough data in stack\n");
  73.                     break;
  74.                 }
  75.  
  76.                 b = pop();
  77.                 a = pop();
  78.  
  79.                 if(b == 0){
  80.                     printf("Cannot divide by zero\n");
  81.                     push(a);
  82.                     push(b);
  83.                     break;
  84.                 }
  85.  
  86.                 push(a / b);
  87.                 break;
  88.  
  89.     		case 5:    if(scanf("%lf", &data) != 1){
  90.     				   printf("Invalid input\n");
  91.     				   return 1;
  92. 						  }
  93.  
  94. 						 push(data);
  95. 						 break;
  96.  
  97.             case 9:
  98.                 answer();
  99.                 break;
  100.  
  101.             default:
  102.                 printf("Invalid command\n");
  103.                 break;
  104.         }
  105.     }
  106.  
  107.     return 0;
  108. }
  109.  
  110. void push(double value)
  111. {
  112.     if(isFull()){
  113.         printf("stack is full\n");
  114.     }else{
  115.         stack[sp++] = value;
  116.     }
  117. }
  118.  
  119. double pop(void)
  120. {
  121.     if(isEmpty()){
  122.         printf("stack is empty\n");
  123.         return 0;
  124.     }else{
  125.         return stack[--sp];
  126.     }
  127. }
  128.  
  129. int isFull(void)
  130. {
  131.     if(sp >= SIZE){
  132.         return 1;
  133.     }else{
  134.         return 0;
  135.     }
  136. }
  137.  
  138. int isEmpty(void)
  139. {
  140.     if(sp <= 0){
  141.         return 1;
  142.     }else{
  143.         return 0;
  144.     }
  145. }
  146.  
  147.  
  148. void answer(void)
  149. {
  150.     double sum = 0;
  151.     int i;
  152.  
  153.     for(i = 0; i < sp; i++){
  154.         printf("Data %d\n", i + 1);
  155.         sum += stack[i];
  156.     }
  157.  
  158.     printf("Answer %g\n", sum);
  159. }
  160.  
  161.  
  162. void reset(void)
  163. {
  164.     sp = 0;
  165. }
  166.  
Success #stdin #stdout 0s 5288KB
comments (?)
stdin
copy 
5
1
5
2
1
9
stdout
copy 
Data 1
Answer 3
https://ideone.com/8LKftK
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!