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| subject: | Auto string-length determination |
On 02 Oct 96, Rowan_Crowe wrote to Paul Wankadia -- PW> I tried to automatically determine the maximum string length by using PW> int Max_Length = sizeof(String) / sizeof(char); PW> because it is an array of char. What am I doing wrong? R > I could be wrong, but sizeof(String) returns the number of chars. Are I looked at the help for it a while back and it returns size_t, which is supposedly the number of bytes...? R > you wanting the number of chars (elements), or number of bytes (an R > obscene word in portable C)? The Max_Length of String -- the strlen(). Yes yes -- the number of elements, if you insist :) R > What happens with the above line, does the compiler return an error, R > or are you getting unpredictable results? Nope -- returns the sizeof() the pointer, according to everyone else who has replied (I think). Which appears to be 2. R > Assuming that the above expression is able to be evaluated at compile R > time, there should be no problems, as you'll get Max_Length = R > sizeof(String) / 1 (on a DOS platform). Yeah -- but String is a pointer, as that line of code is in a function that is passed a pointer to String <:( R > Cheers. What's yours? :) Chow. Junyer Hakker. --- PPoint 2.00* Origin: Junyer's Workshop (3:640/772.3) SEEN-BY: 50/99 620/243 623/630 640/201 206 216 217 222 230 238 254 297 305 SEEN-BY: 640/309 370 375 386 531 535 547 739 750 772 773 820 821 822 823 890 SEEN-BY: 640/895 711/409 410 413 430 808 809 932 934 712/515 713/888 714/906 SEEN-BY: 800/1 @PATH: 640/772 531 201 820 711/409 808 934 |
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