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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. char *string_reverse(char *dst, const char *src)
  5. {
  6.     if (src == NULL) return NULL;
  7.  
  8.     const char *src_start = src;
  9.     char *dst_end = dst + strlen(src);
  10.     *dst_end = '\0';
  11.  
  12.     while ((*--dst_end = *src_start++)) {
  13.         ;
  14.     }
  15.  
  16.     return dst;
  17. }
  18.  
  19.  
  20. int main(void) {
  21.  
  22. 	char str[20] = "Hello World";
  23. 	char dst[20];
  24. 	puts(string_reverse(dst, str));
  25.  
  26. 	return 0;
  27. }
  28.  
Success #stdin #stdout 0s 9432KB
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stdin
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Standard input is empty
stdout
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dlroW olleH
https://ideone.com/KREi2r
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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