Compilare: user.cpp: In function ‘int main()’: user.cpp:24:10: warning: statement has no effect [-Wunused-value] for(t; t>0; t--){ ^ user.cpp:23:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &t); ^ user.cpp:25:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &n, &k, &mod); ^