Compilare: user.cpp: In function ‘void euler(int, int)’: user.cpp:36:9: warning: unused variable ‘u’ [-Wunused-variable] int u=0,kaux=ciclu[x]+1; ^ user.cpp: In function ‘int main()’: user.cpp:58:30: 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:67:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&x,&y); ^