String -> int Conversion ? 2

[Andycapp]

Hello fellow programmers...

I would like to know if there's any good way to convert a string to int ?

An example:
void main{
string Numbers;
string Temp;
int Number;

Numbers = "12345";
Temp.assign(Numbers,0,1); //assigns the first number in the string to Temp
cout << &quot;Temp is : &quot; << Temp; getch(); //Temp here displays &quot;1&quot;
Number = Temp; //this doesn't seem to work

cout << &quot;The number is : &quot; << Number; getch();

}

Can anyone help me with this ??

 

[Maladon]

Take your pick. :->

Number = StrToInt(Temp);
Number = StrToInt64(Temp);
Number = StrToFloat(Temp);
etc.

 

[Andycapp]

Thanks for your effort, Maladon!

But I can't get any of these commands to work...is there some header-file I'm missing ?

I'm using Borland C++ v5.02 ..

Your help is greatly appreciated !

 

[2ffat]

For the older version, look at itoa. It is part of the standard library (stdlib.h). For long integers, look at ltoa.

#include <stdlib.h>
#include <iostream.h>

int main(void)
{
   int number = 12345;
   char string[25];
   int base = 10;

   itoa(number, string, base);
   cout << &quot;integer = &quot; << number << &quot; string = &quot; << string << endl;
   return 0;
}

The above code converts the integer from base 10 to a null-terminated character string. (Base can be any number from 2 to 36). James P. Cottingham

I am the Unknown lead by the Unknowing.
I have done so much with so little
for so long that I am now qualified
to do anything with nothing.

 

[2ffat]

Opps, I'm not awake yet. For the reverse, try atoi, atol, scanf, and strtod. James P. Cottingham

I am the Unknown lead by the Unknowing.
I have done so much with so little
for so long that I am now qualified
to do anything with nothing.