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OrbWorks Community Forum • View topic - (Beginner) Convert String to Number
Page 1 of 1

PostPosted: Sun Jan 21, 2001 10:58 pm
by Admin
About every few weeks, there is a post on our board about this question.
To make it obvious, here is the official answer to this popular question.

There are two ways to do this.

First, the easy way.
<pre id=code><font face=courier size=2 id=code>
string s; int i;
s = "12345";
i = (int) s;
</font id=code></pre id=code>


Second, the hard way:
You can write a routine that convert a string into a number.
<pre id=code><font face=courier size=2 id=code>

strToInt(string sStr)
{
int iIndex, iValue, iResult;
int iLen;

iResult = 0;
iLen = strlen(sStr);

for( iIndex=0; iIndex < iLen;iIndex++)
{
iValue = (int)strgetc(sStr, iIndex) - '0';
iResult = iResult * 10 + iValue;
}
return iResult;
}

main()
{
int i;
i = strToInt("10245");
putsl(i);
showconsole();

}
</font id=code></pre id=code>