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  1. #include <stdio.h>
  2. #include <string.h>
  3. #include <stdlib.h>
  4.  
  5. char* concat(char** array, size_t n) {
  6.     size_t total = 1; // One for null terminator
  7.     for (int i = 0 ; i != n ; i++) {
  8.         total += strlen(array[i]);
  9.     }
  10.     char *res = malloc(total);
  11.     char *wr = res;
  12.     for (int i = 0 ; i != n ; i++) {
  13.         char *rd = array[i];
  14.         while ((*wr++ = *rd++))
  15.             ;
  16.         wr--;
  17.     }
  18.     return res;
  19. }
  20.  
  21. int main(void) {
  22. 	char *data[] = {"quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"};
  23. 	char *s = concat(data, 8);
  24. 	printf("'%s'\n", s);
  25. 	free(s);
  26. 	return 0;
  27. }
  28.  
Success #stdin #stdout 0s 2184KB
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stdin
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Standard input is empty
stdout
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'quickbrownfoxjumpsoverthelazydog'
https://ideone.com/sNphVU
language:
C99 (gcc 8.3)
created:
9 years ago
visibility:
public

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