Compilare: user.cpp: In function ‘int main()’: user.cpp:15:25: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(C+1,2000005,f);N=strlen(C+1);N=N-(C[N]=='\n');C[N+1]='$';T[1]=N; ^ user.cpp:16:27: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(C+2+N,2000005,f);N=strlen(C+1);N=N-(C[N]=='\n'); ^