Compilare: user.c: In function ‘main’: user.c:9:10: warning: unused variable ‘str’ [-Wunused-variable] char str[15] = "ddddd"; ^ user.c:11:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld",&t); ^ user.c:14:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld",&n); ^