Compilare: user.cpp: In function ‘int elem()’: user.cpp:75:9: warning: variable ‘val’ set but not used [-Wunused-but-set-variable] int val; ^ user.cpp: In function ‘int termen()’: user.cpp:54:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:93:23: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,100000,in); ^