Compilare: user.cpp: In function ‘int main()’: user.cpp:99:9: warning: unused variable ‘nr0’ [-Wunused-variable] int nr0=0; ^ user.cpp: In function ‘void pars(int*)’: user.cpp:39:21: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c,20*Q,in); ^ user.cpp:42:25: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c,20*Q,in); ^ user.cpp: In function ‘int main()’: user.cpp:73:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ user.cpp:80:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&a[i]); ^ user.cpp:84:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&b[i]); ^