Re: [Dev-C++] string conversion to integer

[Sam <sch...@ho...>]

It is my understanding that atoi converts its argument, the whole string.
However, to convert a part of a string(a sequence of characters) you would
have to use strtod or strtol.  All of these functions convert strings of
DIGITS to integers, doubles, floats etc.

The strod function receives two arguments, 1. a string and 2. a pointer to a
string.

The strol function receives three arguments 1. a string, 2. a pointer to a
string, and an integer which signifies the base of the value to be
converted.

If you are trying to convert a character such as A just use the %d
conversion specifier.

i.e.

char string[] = "grapes";

printf("%s\n", string);
printf("%d\n\n", string[3]);


output looks like:

grapes
112

Hope this helps.
Sam

----- Original Message -----
From: Alan Thomas <ala...@3n...>
To: <dev...@li...>
Sent: Saturday, January 20, 2001 11:27 AM
Subject: [Dev-C++] string conversion to integer


>         I thought I knew how to convert string objects to integer.  I
> thought a character (e.g., input_string[2] of object string input_string)
> could be referenced in a string and converted using the C ASCII-to-integer
> function atoi.  However, the compiler doesn`t like that and apparently
does
> not see an element of a string array as a character.
>
>             How do you do this?                Thanks, Alan
>
>
>
>
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> http://lists.sourceforge.net/lists/listinfo/dev-cpp-users
>