diff options
Diffstat (limited to 'c.html.markdown')
| -rw-r--r-- | c.html.markdown | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/c.html.markdown b/c.html.markdown index 55e300e8..ff396d21 100644 --- a/c.html.markdown +++ b/c.html.markdown @@ -233,7 +233,9 @@ int main (int argc, char** argv) // this notation is scientific notations for numbers: 1e123 = 1*10^123 // Modulo is there as well, but be careful if arguments are negative - 11 % 3; // => 2 + 11 % 3; // => 2 as 11 = 2 + 3*x (x=3) + (-11) % 3; // => -2, as one would expect + 11 % (-3); // => 2 and not -2, and it's quite counter intuitive // Comparison operators are probably familiar, but // there is no Boolean type in C. We use ints instead. @@ -375,8 +377,11 @@ int main (int argc, char** argv) https://ideone.com/GuPhd6 this will print out "Error occurred at i = 51 & j = 99." */ - /* it is generally considered bad practice to do so, except if */ - /* you really know what you are doing */ + /* + it is generally considered bad practice to do so, except if + you really know what you are doing. See + https://en.wikipedia.org/wiki/Spaghetti_code#Meaning + */ /////////////////////////////////////// // Typecasting @@ -749,12 +754,12 @@ typedef void (*my_fnp_type)(char *); // Order of Evaluation /////////////////////////////////////// -// From top to bottom, top is has higher precedence +// From top to bottom, top has higher precedence //---------------------------------------------------// // Operators | Associativity // //---------------------------------------------------// // () [] -> . | left to right // -// ! ~ ++ -- + = *(type)sizeof | right to left // +// ! ~ ++ -- + = *(type) sizeof | right to left // // * / % | left to right // // + - | left to right // // << >> | left to right // @@ -832,7 +837,7 @@ Best to find yourself a copy of [K&R, aka "The C Programming Language"](https:// It is *the* book about C, written by Dennis Ritchie, the creator of C, and Brian Kernighan. Be careful, though - it's ancient and it contains some inaccuracies (well, ideas that are not considered good anymore) or now-changed practices. -Another good resource is [Learn C The Hard Way](http://learncodethehardway.org/c/). +Another good resource is [Learn C The Hard Way](http://learncodethehardway.org/c/) (not free). If you have a question, read the [compl.lang.c Frequently Asked Questions](http://c-faq.com). @@ -842,4 +847,4 @@ Readable code is better than clever code and fast code. For a good, sane coding Other than that, Google is your friend. -[1] [Why isn't sizeof for a struct equal to the sum of sizeof of each member?](http://stackoverflow.com/questions/119123/why-isnt-sizeof-for-a-struct-equal-to-the-sum-of-sizeof-of-each-member) +[1] [Why isn't sizeof for a struct equal to the sum of sizeof of each member?](https://stackoverflow.com/questions/119123/why-isnt-sizeof-for-a-struct-equal-to-the-sum-of-sizeof-of-each-member) |