Compilare: user.cpp: In function ‘int main()’: user.cpp:31:29: 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:34:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&mat[i][j]); ^ user.cpp: In function ‘int recurs(int, int)’: user.cpp:9:7: warning: ‘mij’ may be used uninitialized in this function [-Wmaybe-uninitialized] int mij; ^