Compilare: user.cpp: In function ‘void BFSprec()’: user.cpp:50:15: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (i == 0 && j == 0 || i * j) ^ user.cpp: In function ‘char DFS(int, int, int)’: user.cpp:72:14: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (i == 0 && j == 0 || i * j) ^ user.cpp: In function ‘void readInput()’: user.cpp:111:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &R, &C); ^ user.cpp:114:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf(" %c", &M[i][j]); ^ user.cpp: In function ‘int main()’: user.cpp:123:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(InFile, "r", stdin); ^ user.cpp:124:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(OuFile, "w", stdout); ^