1 double p; 2 char s[10]; 3 memset(s,0,sizeof(s)); 4 s[0]=‘0‘; 5 s[1]=‘.‘; 6 for (int i=2;i<10;i++) 7 { 8     s[i]=rand()%10+‘0‘; 9 }10 p=atof(s);11 cout << p <<endl;