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  1. #include <stdio.h>
  2.  
  3. void reverse(char *str);
  4. void test(char *str);
  5. int main() {
  6.  char * h = "Hello World\n";
  7.  printf("%s", h); 
  8.  test(h);
  9.  reverse(h);
  10.  printf("%s", h); 
  11. }
  12.  
  13. void test(char *str) {
  14.   printf("test %s", str);
  15. }
  16.  
  17. void reverse(char *str) {
  18.  char * end = str;
  19.  char tmp;
  20.  if (str) {
  21.    while (*end) {
  22.      printf("while %s", end);
  23.      ++end;
  24.    }   
  25.    --end;
  26.    while (str < end) {
  27.      tmp = *str;
  28.  
  29.     printf("swapwhile %c\n", tmp);
  30.     *str = *end;
  31.     str++;
  32.  //    *str++ = *end;
  33.      *end-- = tmp;
  34.    }   
  35.  
  36.  }
  37. }
  38.  
Runtime error #stdin #stdout 0s 9424KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
https://ideone.com/VNycUR
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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