convert string to double

Code:

---

int main()
{
double x;
char s[200]="22.453";
x=atof(s);
printf("%lf",x);


}

---

why doesnt this give me the float value that I need. How can I fix it
the atof function called I thought would take "22.453"
and get 22.453 and then let me put that into an integer.

You need to #include <stdlib.h>. And #include <stdio.h> while you're at it. (Why you need to be told this, I don't know...)

And also, atof is deprecated in favor of strtod. Replace with strtod(nptr, (char **)NULL);

> And also, atof is deprecated in favor of strtod. Replace with strtod(nptr, (char **)NULL);

Actually, atof isn't deprecated with anything. It is still supported by the C standards.

Also, &#37;lf is not the correct format for printing a float/double.

Quote:

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Originally Posted by citizen

> And also, atof is deprecated in favor of strtod. Replace with strtod(nptr, (char **)NULL);

Actually, atof isn't deprecated with anything. It is still supported by the C standards.

---

For what it's worth, it is in BSD and OS X.

And at any rate, strtod is the better function.

(Also, gets is still supported by the C standards, so that's really a suboptimal argument to make.)

Code:

---

#include <stdio.h>

int main()
{
double x;
char s[200]="22.453";
x=strtod(s, (char **)NULL);

printf("&#37;lf",x);


}

---

returns

-802490616.000000

can you show me a working solution to this...coz I tried strtod and atof..
..

http://www.daniweb.com/code/snippet597.html

Quote:

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Originally Posted by zx-1

For what it's worth, it is in BSD and OS X.

---

Really? I've lost a little respect for both, then. They have no business "deprecating" completely standard language features.

Quote:

---

And at any rate, strtod is the better function.

---

Probably.

> Also, &#37;lf is not the correct format for printing a float/double.

Then later, you repeat your original code
> printf("%lf",x);

Last chance saloon - drink up or leave town.

so what should I use &#37;f?
pretty interesting site Dave_Sinkula

Yes, &#37;f is used with printf() for floats and doubles, while scanf() uses %f for floats and %lf for doubles.