diff options
Diffstat (limited to 'c.html.markdown')
| -rw-r--r-- | c.html.markdown | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/c.html.markdown b/c.html.markdown index 7c2386ef..d92d2ee6 100644 --- a/c.html.markdown +++ b/c.html.markdown @@ -76,7 +76,7 @@ int main (int argc, char** argv) /////////////////////////////////////// // Types /////////////////////////////////////// - + // All variables MUST be declared at the top of the current block scope // we declare them dynamically along the code for the sake of the tutorial @@ -239,7 +239,7 @@ int main (int argc, char** argv) z = (e > f) ? e : f; // => 10 "if e > f return e, else return f." // Increment and decrement operators: - char *s = "iLoveC"; + char *s = "ILoveC"; int j = 0; s[j++]; // => "i". Returns the j-th item of s THEN increments value of j. j = 0; @@ -313,9 +313,15 @@ int main (int argc, char** argv) case 1: printf("Huh, 'a' equals 1!\n"); break; + // Be careful - without a "break", execution continues until the + // next "break" is reached. + case 3: + case 4: + printf("Look at that.. 'a' is either 3, or 4\n"); + break; default: // if `some_integral_expression` didn't match any of the labels - fputs("error!\n", stderr); + fputs("Error!\n", stderr); exit(-1); break; } @@ -340,8 +346,8 @@ int main (int argc, char** argv) https://ideone.com/GuPhd6 this will print out "Error occured at i = 52 & j = 99." */ - - + + /////////////////////////////////////// // Typecasting /////////////////////////////////////// @@ -440,7 +446,7 @@ int main (int argc, char** argv) for (xx = 0; xx < 20; xx++) { *(my_ptr + xx) = 20 - xx; // my_ptr[xx] = 20-xx } // Initialize memory to 20, 19, 18, 17... 2, 1 (as ints) - + // Note that there is no standard way to get the length of a // dynamically allocated array in C. Because of this, if your arrays are // going to be passed around your program a lot, you need another variable @@ -491,7 +497,7 @@ int add_two_ints(int x1, int x2) /* Functions are call by value. When a function is called, the arguments passed to -≈the function are copies of the original arguments (except arrays). Anything you +the function are copies of the original arguments (except arrays). Anything you do to the arguments in the function do not change the value of the original argument where the function was called. @@ -716,13 +722,13 @@ typedef void (*my_fnp_type)(char *); /******************************* Header Files ********************************** -Header files are an important part of c as they allow for the connection of c -source files and can simplify code and definitions by seperating them into +Header files are an important part of c as they allow for the connection of c +source files and can simplify code and definitions by seperating them into seperate files. -Header files are syntaxtically similar to c source files but reside in ".h" -files. They can be included in your c source file by using the precompiler -command #include "example.h", given that example.h exists in the same directory +Header files are syntactically similar to c source files but reside in ".h" +files. They can be included in your c source file by using the precompiler +command #include "example.h", given that example.h exists in the same directory as the c file. */ |