Compilare: user.cpp: In function ‘int evaluate(char (*)[5])’: user.cpp:16:4: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (ch[i][1]==ch[i][2] && ch[i][2]==ch[i][3]) ^ user.cpp:23:4: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (ch[1][i]==ch[2][i] && ch[2][i]==ch[3][i]) ^ user.cpp:29:4: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (ch[1][1]==ch[2][2] && ch[2][2]==ch[3][3]) ^ user.cpp:35:4: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (ch[1][3]==ch[2][2] && ch[2][2]==ch[3][1]) ^ user.cpp: In function ‘int main()’: user.cpp:82:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("xsizero.in","r",stdin); ^ user.cpp:83:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("xsizero.out","w",stdout); ^ user.cpp:139:12: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n");} ^