Compilare: user.cpp: In function ‘int main()’: user.cpp:41:8: warning: unused variable ‘g’ [-Wunused-variable] FILE* g = fopen("brazi.out", "wt"); ^ user.cpp:44:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(fscanf(f, "%d", &t); t; t--) { ^ user.cpp:46:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^ user.cpp:51:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d", &a, &b, &c); ^