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Help with String Comparison

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Join Date: Jan 2005

Posts: 31

Reputation: tat2dlady is an unknown quantity at this point

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tat2dlady

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Help with String Comparison

Mar 8th, 2005

Can anyone tell me how to compare a string to an integer? I have a SSN stored as a string, SSN[10]. I need to compare each number in the SSN. What I need to do is to add up the ASCII values of the SSN to use for a hashing function. For example, the SSN is 222116666. I need to add the ASCII values up: 50 + 50 + 50 + 49 + 49 + 54 + 54 + 54 + 54 = 464.
strcmp() does not work comparing a string and an integer. I have the string class and tried it that way (declaring SSN as a string type) but then it will not let me use get(SSN) to read the SSN. Any suggestions? Thanks a lot.

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Join Date: Feb 2005

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Tight_Coder_Ex Tight_Coder_Ex is offline

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Re: Help with String Comparison

Mar 8th, 2005

Fortunately all data is numeric, string or otherwise. Therefore casting a single element of SSN to int allows you to add that single byte to an integer as if it were original an integer.

Help with Code Tags

C++ Syntax (Toggle Plain Text)

#include <iostream>

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
using namespace std;
 
int main()
	 {
	 int Result, Pntr;
	 string SSN = "112226666";
	 Result = Pntr = 0;
 
	 while (SSN [Pntr])
	 Result += (int) SSN [Pntr++];
 
 
	 cout << Result << endl;
	 return 0;
	 }
using namespace std;
 
int main()
	 {
	 int Result, Pntr;
	 string SSN = "112226666";
	 Result = Pntr = 0;
 
	 while (SSN [Pntr])
	 Result += (int) SSN [Pntr++];
 
 
	 cout << Result << endl;
	 return 0;
	 }