Compilare: user.c: In function ‘main’: user.c:13:10: warning: unused variable ‘c’ [-Wunused-variable] char c; ^ user.c:12:11: warning: unused variable ‘x’ [-Wunused-variable] int T,x,size; ^ user.c:9:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.c:16:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&T); ^ user.c:32:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s100",s); ^