Compilare: user.c: In function ‘main’: user.c:6:17: warning: variable ‘p’ set but not used [-Wunused-but-set-variable] int n,x,m,i,p,k; ^ user.c:6:11: warning: unused variable ‘x’ [-Wunused-variable] int n,x,m,i,p,k; ^ user.c:13:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.c:14:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&m); ^ user.c:20:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",a); ^