Compilare: user.cpp: In function ‘int main()’: user.cpp:34:9: warning: unused variable ‘nr’ [-Wunused-variable] int nr = n*m,t = 1, lund = 0; ^ user.cpp:24:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d",&n,&m); ^ user.cpp:29:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&v[i][j]); ^