Compilare: user.cpp: In function ‘int main()’: user.cpp:50:31: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[10]’ [-Wformat=] fscanf(f_in,"%s",&buff); ^ user.cpp: In function ‘void citeste(long long int&)’: user.cpp:16:41: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,10,stdin),poz=0; ^ user.cpp:21:41: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,10,stdin),poz=0; ^ user.cpp: In function ‘int main()’: user.cpp:47:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f_in,"%d %d",&m,&n); ^ user.cpp:50:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f_in,"%s",&buff); ^