Atoi, converting a string into an integer variable.

Itoa, converting integer variables into characters.

For example:

# include & ltiostream & gt

int main()

{

char ch buf[5]；

int k；

k = 10；

itoa(k，chBuf， 10)；

Printf ("The value stored in the string is: %s\n", chbuf);

k = atoi(ch buf)；

Printf ("Put the string into the value of int variable k: %d \n", k);

Returns 0;

}