Compilare: user.cpp: In function ‘int main()’: user.cpp:7:27: warning: unused variable ‘nn’ [-Wunused-variable] int q,n,s1=0,s2=0,i,j,nn; ^~ user.cpp:9:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&q); ^ user.cpp:14:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^