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  1. #include <stdio.h>
  2.  
  3. f(n,p)char*p;{for(p+=n-1;isalnum(*p)|*p==95&&n--;--p);for(;isalnum(*++p)|*p==95;putchar(*p));}
  4.  
  5. int main(void) {
  6. 	f(5,"abc d_f ghi");
  7. 	puts("");
  8. 	f(8,"ab     cd");
  9. 	return 0;
  10. }
  11.  
Success #stdin #stdout 0s 2160KB
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stdin
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Standard input is empty
stdout
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d_f
cd
https://ideone.com/eUK0ND
language:
C (gcc 8.3)
created:
7 years ago
visibility:
secret

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