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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <time.h>
  4. int main()
  5. {
  6.    int lotto[45][2] = { 0 };
  7.    int i, j,s,k;
  8.  
  9.    srand(time(0));
  10.    for (i = 0; i < 45; i++) {
  11.       for(j=0;j<2;j++)
  12.       lotto[i][j] = i + 1;
  13.    }
  14.    for (s = 0; s < 1000; s++) {
  15.       i = rand() % 45;
  16.       k = rand() % 45;
  17.       lotto[i][2] ^= lotto[k][2];
  18.       lotto[k][2] ^= lotto[i][2];
  19.       lotto[i][2] ^= lotto[k][2];
  20.    }
  21.    for (i = 0; i < 5; i++) {
  22.       for (k=i+1;k< 6;k++)
  23.          if (lotto[i][2] > lotto[k][2]) {
  24.             lotto[i][2] ^= lotto[k][2];
  25.             lotto[k][2] ^= lotto[i][2];
  26.             lotto[i][2] ^= lotto[k][2];
  27.          }
  28.    }
  29.    for (i = 0; i < 6; i++)
  30.       printf("%d,%d", lotto[i][1], lotto[i][2]);
  31.       printf("\n");
  32. }
  33.  
Runtime error #stdin #stdout #stderr 0s 4544KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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*** stack smashing detected ***: <unknown> terminated
https://ideone.com/L0lpTU
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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