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  1. #include <stdint.h>
  2. #include <stdio.h>
  3. #include <stdlib.h>
  4. #include <time.h>
  5.  
  6. void fillrandom(char *dst, size_t len) {
  7.     for (int k = 0; k < len; k += 4) {
  8.         *(uint32_t*)(dst+k) = rand() & 0x7f7f7f7f; // fill 4 bytes at once
  9.     }
  10. }
  11.  
  12. int main(void) {
  13.     char x[40];
  14.     srand(time(0));
  15.     fillrandom(x, 40);
  16.     for (int i = 0; i < 40; i++) printf("%02x ", x[i]);
  17.     puts("");
  18. 	return 0;
  19. }
  20.  
Success #stdin #stdout 0s 4124KB
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stdin
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Standard input is empty
stdout
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5b 03 16 03 3c 54 71 09 65 26 2f 26 18 4a 74 53 4e 15 51 0a 45 15 4b 5f 77 7a 5b 7b 05 60 1a 19 04 32 11 75 60 09 1d 62
https://ideone.com/7ILLp4
random by 4
language:
C (gcc 8.3)
created:
5 years ago
visibility:
secret

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