Compilare: user.cpp: In function ‘int main()’: user.cpp:11:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:16:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&a); ^ user.cpp:30:44: warning: ‘i3’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fout,"%d %d %d\n",max,i3+1,i2+1); ^ user.cpp:30:44: warning: ‘i2’ may be used uninitialized in this function [-Wmaybe-uninitialized]