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atoi()                   General Function                  atoi()




Convert ASCII strings to integers

iinntt aattooii(_s_t_r_i_n_g) cchhaarr *_s_t_r_i_n_g;

atoi  converts string  into the binary  representation of  an in-
teger.   string may  contain  a leading  sign and  any number  of
decimal digits.   atoi ignores leading blanks  and tabs; it stops
scanning  when  it  encounters  any  non-numeral other  than  the
leading sign, and returns the resulting int.

***** Example *****

The following demonstrates atoi.   It takes a string typed at the
terminal, turns  it into an integer, then  prints that integer on
the screen.  To exit, type <ctrl-C>.


main()
{
        extern char *gets();
        extern int atoi();
        char string[64];



        for(;;) {
                printf("Enter numeric string: ");
                if(gets(string))
                        printf("%d\n", atoi(string));
                else
                        break;
        }
}


***** See Also *****

atof(), atol(), general functions, int, printf(), scanf()

***** Notes *****

atoi does  not check to  see if the number  represented by string
fits into an  iinntt.  It returns zero if you  hand it a string that
it cannot interpret.












COHERENT Lexicon                                           Page 1

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