Array-08. String converted to decimal integer

Array-08. String converted to decimal integer (15) time limit MS Memory limit 65536 KB code length limit 8000 B award Program StandardAuthor Zhang Tong Hongyu (Zhejiang University)

Enter a string ending with #, which requires filtering out all non-hexadecimal characters (not case), forming a new string representing a hexadecimal number, and then converting it to a decimal number after the output. If the first character of the filtered string is "-", it indicates that the number is negative.

Input format:

The input gives a non-empty string that ends with # in a row.

Output format:

Outputs the converted decimal number in a row. The title ensures that the output is within the long range.

Input Sample:

+p-xf4+-1!#

Sample output:

-3905

1#include <stdio.h>2#include <math.h>3#include <stdlib.h>4#include <string.h>5 intMain ()6 {7     intI, j =0, flag =1, sum =0;8     Charstr[ -], s[ -];9 gets (str);Ten      for(i =0; Str[i]! ='#'; i++) One     { A         if(Str[i] = ='-'&&flag) -S[j++] =Str[i]; -         if((Str[i] >='0'&& Str[i] <='9') || (Str[i]) >='a'&& Str[i] <='F'|| (Str[i] >='A'&& Str[i] <='F')) the         { -S[j++] =Str[i]; -Flag =0; -         } +     } -     if(s[0] !='-') +          for(i = j-1; I >=0; i--) A         { at             if(S[i] >='0'&& S[i] <='9') -Sum + = (S[i]-'0') * POW ( -, J-1-i); -             Else if(S[i] >='a'&& S[i] <='F') -Sum + = (S[i]-'a'+Ten) * POW ( -, J-1-i); -             Else if(S[i] >='A'&& S[i] <='F') -Sum + = (S[i]-'A'+Ten) * POW ( -, J-1-i); in         } -     Else to     { +          for(i = j-1; i >0; i--) -         { the             if(S[i] >='0'&& S[i] <='9') *Sum + = (S[i]-'0') * POW ( -, J-1-i); $             Else if(S[i] >='a'&& S[i] <='F')Panax NotoginsengSum + = (S[i]-'a'+Ten) * POW ( -, J-1-i); -             Else if(S[i] >='A'&& S[i] <='F') theSum + = (S[i]-'A'+Ten) * POW ( -, J-1-i); +         } Asum =-sum; the     } +printf"%d\n", sum); -     return 0; $}

Array-08. String converted to decimal integer