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funktion itoa


Hello,

I need to convert a integer to a string and in this case I want to use the
itoa funktion call.
I found a description of this funktion that explains:

char *  itoa ( int value, char * buffer, int radix ); 

Wich is defined in stdlib.h.

When I try to compile I get the follwing error:  implicit declaration of
function `int itoa(...)'

My function call looks like: itoa(B->anzahl, menge, 10);

When I look into stdlib.h will find the following line:

int	_EXFUN(atoi,(const char *__nptr));

Here it is defined with a int as return value.

What is my description wrong and how must I use this funktion?

Thanks a lot in advance

Frank

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