Sudoku

input/code.cpp: In function 'int main()':
input/code.cpp:24:18: warning: iteration 8u invokes undefined behavior [-Waggressive-loop-optimizations]
     rivi[i] = r[i] - '0'; // convertoidaan numeroksi
                  ^
input/code.cpp:22:3: note: containing loop
   for (int i = 0; i < 9; i++)
   ^
input/code.cpp:29:24: warning: iteration 8u invokes undefined behavior [-Waggressive-loop-optimizations]
     std::cout << rivi[i];
                        ^
input/code.cpp:27:3: note: containing loop
   for (int i = 0; i < 9; i++)
   ^

// sudoku

#include <iostream>

// toteutus ei ole optimaalinen

int rivi[8];

int l(int i)
{
  while(i > 9) i -= 9;
  // purkka jolla estetaan bugi, jossa 1 sijasta tulee aina nolla
  if (rivi[i] == 0) return 1;
  return rivi[i];
}

int main()
{
  // luetaan rivi
  char r[8];
  std::cin >> r[0] >> r[1] >> r[2] >> r[3] >> r[4] >> r[5] >> r[6] >> r[7] >> r[8];
  for (int i = 0; i < 9; i++)
  {
    rivi[i] = r[i] - '0'; // convertoidaan numeroksi
  }

  for (int i = 0; i < 9; i++)
  {
    std::cout << rivi[i];
  }
  
  // kaydaan kaikki rivit lapi
  int plus = 3;
  int i = 0;
  while (i < 9)
  {
    i++;
    if (i % 3 == 0) plus++;
    std::cout << std::endl;
    for (int n = 0; n < 9; n++)
    {
      //ruudukko[i][n] = l(n + 3 + plus);
      std::cout << l(n + plus);
    }
    plus += 3;
  }
  std::cout << std::endl; // rivinvaihto
}

Test 1

Verdict: RUNTIME ERROR

*** stack smashing detected ***: input/code terminated

Test 2

Verdict: RUNTIME ERROR

*** stack smashing detected ***: input/code terminated

Test 3

Verdict: RUNTIME ERROR

*** stack smashing detected ***: input/code terminated

Test 4

Verdict: RUNTIME ERROR

*** stack smashing detected ***: input/code terminated

Test 5

Verdict: RUNTIME ERROR

*** stack smashing detected ***: input/code terminated