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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. int main()
  5. {
  6. //    char str_1[500];
  7. //    puts("Input a string: ");
  8. //    gets_s(str_1);
  9.     char str_1[] = "qwert qwerty  qwertyuiop   qwer  12345678    qazxswedc";
  10.     char str_2[500];
  11.     char * str1_end = str_1 + strlen(str_1);
  12.     char * cur_str2 = str_2;
  13.     char * cur_word = str_1;
  14.     int word_length = 0;
  15.     for(char *cur_ch = str_1; cur_ch < str1_end; ++cur_ch)
  16.     {
  17.       if(*cur_ch == ' ')
  18.       {
  19.         if(word_length > 6)
  20.         {
  21.            memcpy(cur_str2, cur_word, word_length);
  22.            cur_str2 += word_length;
  23.            *cur_str2++ = ' ';
  24.         }
  25.         cur_word += word_length;
  26.         ++cur_word;
  27.         word_length = 0;
  28.       } else {
  29.         ++word_length;
  30.       }
  31.     }
  32.     if(word_length > 6)
  33.     {
  34.        memcpy(cur_str2, cur_word, word_length);
  35.        cur_str2 += word_length;
  36.     }
  37.     if(cur_str2 != str_2)
  38.     {
  39.         *--cur_str2 = 0;
  40.         puts(str_2);
  41.     }
  42. }
Success #stdin #stdout 0s 4584KB
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stdin
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Standard input is empty
stdout
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qwertyuiop 12345678 qazxswed
https://ideone.com/xiiQxL
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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