Compilare: user.cpp: In function ‘int main()’: user.cpp:19:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin , "%d%d" , &n , &m); ^ user.cpp:20:24: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c, 100 , fin); ^ user.cpp:29:29: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c , 102 , fin); ^ user.cpp:69:31: warning: ‘poz22’ may be used uninitialized in this function [-Wmaybe-uninitialized] d2[start.lin][start.col]=1; ^ user.cpp:69:31: warning: ‘poz11’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:50:31: warning: ‘poz2’ may be used uninitialized in this function [-Wmaybe-uninitialized] d1[start.lin][start.col]=1; ^ user.cpp:50:31: warning: ‘poz1’ may be used uninitialized in this function [-Wmaybe-uninitialized]