Compilare: user.cpp: In function ‘void square(int, int)’: user.cpp:40:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(c[x+k][y+k] == c[x-k][y+k] && c[x+k][y-k] == c[x-k][y-k]) /// e bine si pe diagonale ^ user.cpp: In function ‘void Read()’: user.cpp:8:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&N); ^ user.cpp:11:33: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c[i]+1,1002,stdin); ^ user.cpp: In function ‘int main()’: user.cpp:58:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld2d.in","r",stdin); ^ user.cpp:59:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld2d.out","w",stdout); ^