Compilare: user.cpp: In function ‘int main()’: user.cpp:41:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d\n",&t,&n,&m); ^ user.cpp:50:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s\n",s[i]); ^