fork download
copy 
  1. #include<stdio.h> 
  2. #include<string.h> 
  3. int top;
  4. char s[10]; 
  5. char data;
  6. void push(int x)
  7. {
  8. s[top++]=x;
  9. }
  10. char pop()
  11. {
  12. data = s[--top]; 
  13. return data;
  14. }
  15. int main()
  16. {
  17. int i=0,n,state=0; 
  18. char a[10],x;
  19. printf("Program For PDA Which Accepts Strings Of WCW^r\n"); 
  20. printf("Enter String:");
  21. gets(a); 
  22. n=strlen(a);
  23.  
  24. top=-1; 
  25. while(a[i]!='c'){
  26. if(a[i]=='a'||a[i]=='b')
  27. {
  28. state=0; 
  29. push(a[i]); 
  30. i++;
  31. }
  32. else
  33. {
  34. state=99; 
  35. break;
  36. }
  37. }
  38. if(a[i]=='c' && state==0)
  39. {
  40. state=1; 
  41. i++;
  42. }
  43. while(a[i]!='\0' && state==1)
  44. {
  45. x=pop();
  46. if(a[i]==x)
  47.  
  48. state=1; 
  49. if(a[i]!=x)
  50. {
  51. state=99; 
  52. break;
  53. } 
  54. i++;
  55. }
  56. if(state==1 && a[i]=='\0') 
  57. state=100;
  58. if (state==100)
  59. printf("String Accepted."); 
  60. else
  61. printf("String Rejected."); 
  62. return 0;
  63. }
Success #stdin #stdout #stderr 0.02s 6992KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
stderr
copy 
ERROR: /home/97d3A6/prog:63:0: Syntax error: end_of_file_in_quasi_quotation
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/rjq4O6
language:
Prolog (swi 7.6.4)
created:
2 years 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!