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  1. %{ #include<stdio.h>
  2. int line=0, word=0, ch=0;
  3.  %} 
  4. %% 
  5. [a-z|A-Z|0-9] {ch++;} 
  6. " " {word++;} 
  7. "\n" {line++; word++;} 
  8. %% 
  9. int yywrap(void){}
  10.  void main(int argc, char* argv[]){
  11.  /*yyin = fopen(argv[1],"r");*/
  12.  yylex();
  13.  printf("Line = %d\n",line); 
  14. printf("Word = %d\n",word); 
  15. printf("Character = %d\n",ch); 
  16. }
  17.  
Success #stdin #stdout #stderr 0.02s 7032KB
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stdin
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Hello there
This is a sample string
stdout
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Standard output is empty
stderr
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ERROR: /home/YBF1Dw/prog:16:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? ERROR: Unknown option (h for help)
   Exception: (3) program ? EOF: exit
https://ideone.com/uHGsTn
language:
Prolog (swi 7.6.4)
created:
2 days ago
visibility:
public

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