Extracting numbers from a string in C + +

With standard input and output:

Input: 12&3 34*133^3131 13031*

Output: 12 3 34 133 3131 13031

Idea, first put the entire input into a string, and then parse the string, so it will run faster.

1 intGetnum (Const Char* STR,int*num)//input: str---string pointer, num---the array pointer to hold the number returns: number of digits2 {3     intlen=strlen (str);4     intindex=0;5     intT;6      for(intI=0; i<len;i++)7     {8          while(! (str[i]>'0'&&str[i]<'9'))9         {Teni++; One         } A          while(str[i]>='0'&&str[i]<'9') -         { -t=str[i]-'0'; thenum[index]=num[index]*Ten+T; -i++; -         } -index++; +     } -     returnindex; +}

Extracting numbers from a string in C + +