Compilare: user.cpp: In function ‘int main()’: user.cpp:15:21: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘long long int*’ [-Wformat=] fscanf(f,"%d",&T); ^ user.cpp:23:20: warning: NULL used in arithmetic [-Wpointer-arith] if(sir[0]==NULL||sir[0]=='\n') fscanf(f,"%s",sir); ^ user.cpp:15:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&T); ^ user.cpp:18:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lld%lld",&N,&K); ^ user.cpp:19:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",sir); ^ user.cpp:23:58: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] if(sir[0]==NULL||sir[0]=='\n') fscanf(f,"%s",sir); ^