Compilare: user.cpp: In function ‘int main()’: user.cpp:8:9: warning: unused variable ‘maxl’ [-Wunused-variable] int maxl,maxs,maxb,maxe,sum,b; ^ user.cpp:11:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:16:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&val); ^ user.cpp:24:21: warning: ‘sum’ may be used uninitialized in this function [-Wmaybe-uninitialized] sum+=val; ^