strings and outputs

[Mule]

I'm writing code that will take a string input (any combination of
digits, letters) and I need it to output the numbers.
Here is the code:



#include <iostream>
#include <string>
#include <cmath>

using namespace std;

int main()
{
int x,i,y;
y = 0, x = 10;
string did;
cin >> did;
for (i=0;i<13;i++)
{
if (isdigit(did[i]))
{
y = did[i];
cout<<y<<endl;
}
}

return 0;
}

My problem is the line y=did[i].
I want to get y to equall the digits in the string.
When you run it the output is some high number not the digit in the string.

[ober]

as far as i know there is no "string" type in C++... you have to declare an array of characters.

char did[10];

Always good to use constants in variable declarations too.

oh, and use the code tags (see the FAQ) or hit the # symbol above your postings when making a post.

[alpha]

Originally posted by ober5861
as far as i know there is no "string" type in C++...

<string> header file.

[jdinger]

Try this (changes are in bold):

#include <iostream>
#include <string>
#include <cmath>

using namespace std;

int main()
{
	int x,i,y;
	y = 0, x = 10;
	string did;
	cin >> did;
	for (i=0;i<13;i++)
	{
		if (isdigit(did[i]))
		{
			y=did[i]-48;
			cout<<y<<endl;
		}
	}
	return 0;
}