Compilare: user.cpp: In function ‘long int stramos(long int, long int)’: user.cpp:8:12: warning: unused variable ‘sol’ [-Wunused-variable] long k,sol; ^ user.cpp: In function ‘void precalc()’: user.cpp:17:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,k=2; ^ user.cpp: In function ‘int main()’: user.cpp:30:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld %ld",&n,&m); ^ user.cpp:31:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;++i) fscanf(f,"%ld",&a[i]); ^ user.cpp:35:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld %ld",&q,&p); ^