Compilare: user.cpp: In function ‘int main()’: user.cpp:118:6: warning: unused variable ‘min’ [-Wunused-variable] int min; ^ user.cpp:79:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d\n%d\n",&n,&c); ^ user.cpp:100:18: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(v,500,in); ^