Compilare: user.cpp: In function ‘huge operator-(const huge&, const huge&)’: user.cpp:163:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp: In function ‘void main2()’: user.cpp:301:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d\n",&n); ^ user.cpp: In member function ‘void huge::read()’: user.cpp:18:25: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(meu,SZ,in); ^ user.cpp: In function ‘int main()’: user.cpp:355:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&t); ^