Compilare: main.cpp: In function 'int main()': main.cpp:26:33: warning: suggest parentheses around '&&' within '||' [-Wparentheses] } else if (!(sum3 >= 0) && sum != sum1 || sum != sum2) { ~~~~~~~~~~~~~^~~~~~~~~~~~~~ main.cpp:88:71: warning: 'x2' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << matrice[x1][y1] + (corect - err1) << " " << matrice[x2][y2] + (corect - err2); ~~~~~~~~~~~~~~^ main.cpp:88:27: warning: 'y1' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << matrice[x1][y1] + (corect - err1) << " " << matrice[x2][y2] + (corect - err2); ~~~~~~~~~~~~~~^ main.cpp:88:27: warning: 'x1' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:88:71: warning: 'y2' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << matrice[x1][y1] + (corect - err1) << " " << matrice[x2][y2] + (corect - err2); ~~~~~~~~~~~~~~^