Compilare: user.cpp: In function ‘int main()’: user.cpp:23:29: 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:26:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i][j]); ^ user.cpp:50:38: warning: ‘indice’ may be used uninitialized in this function [-Wmaybe-uninitialized] mat[i][j]=mat[i-1][indice]+v[i-1][j]+v[i][j]; ^