Compilare: user.cpp: In function ‘int main()’: user.cpp:66:13: warning: unused variable ‘ad’ [-Wunused-variable] int a,n,i,ad,c,nr_rot=0,x; ^ user.cpp:71:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&c); ^ user.cpp:76:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a); ^ user.cpp:81:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&x); ^