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  1. #include <stdio.h>
  2. #include <ctype.h>
  3.     void keepalnum(char *src) {
  4.         char *dest = src;
  5.         while ((*dest = *src++)) {
  6.             dest += isalnum(*dest) ? 1 : 0;
  7.         }
  8.     }
  9. int main(void) {
  10.     char str[] = "quick-brown fox jumps? over the.. lazy dog!";
  11.     keepalnum(str);
  12.     printf("%s\n", str);
  13. 	return 0;
  14. }
Success #stdin #stdout 0.01s 1676KB
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quickbrownfoxjumpsoverthelazydog
https://ideone.com/Ynx1H
language:
C (gcc 8.3)
created:
13 years ago
visibility:
public

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