CS349/SE382 A1 C Programming Tutorial

Source: www.cgl.uwaterloo.ca
Topic: C Programming

Short Desciption:
CS349/SE382 A1 CProgramming Tutorial Dierences fromC++ Dynamic Memory Dynamic Memory: Dynamic Memory Allocation I memory is allocated usingmalloc() I malloc() takes the number of ...

 

Content Inside:
CS349/SE382 A1 CProgramming Tutorial CS349/SE382 A1 CProgramming Tutorial Erin Lester January 2005 CS349/SE382 A1 CProgramming Tutorial Outline Dierences fromC++ Comments Variable Declarations Objects Dynamic Memory Boolean Type structs, enumsandunions Other Dierences The EventLoop CS349/SE382 A1 CProgramming Tutorial Dierences fromC++ Comments Comments: I Chasnoone-line comments, only block comments /*this comment is valid in C*/ /*so is this one*/ //butthisoneisnot i=2; //and neither is this one CS349/SE382 A1 CProgramming Tutorial Dierences fromC++ Variable Declarations Variable Declarations: I Variables must be declared at the beginning of code blocks, before any other types of statements #include<stdio.h> void main() { charc; inti; i=10+2; char*mystring="Hello World"; /*not allowed*/ c= ; printf("%s%c", mystring, c); } CS349/SE382 A1 CProgramming Tutorial Dierences fromC++ Objects Objects: I Chasnoobjects I use ADTs—remembercs246—to be modular CS349/SE382 A1 CProgramming Tutorial Dierences fromC++ Objects Creating a mock class/ADT Step1. Create a header file for your mock class include: I empty structure declaration I function headersw/structure as parameter CS349/SE382 A1 CProgramming Tutorial Dierences fromC++ Objects Creating a mock class/ADT Step2. Implement the code for the mock class ina.cfile: I include your.hfile I declare the structure I implement theADTsfunctions CS349/SE382 A1 CProgramming Tutorial Dierences fromC++ Dynamic Memory Dynamic Memory: Dynamic Memory Allocation I memory is allocated usingmalloc() I malloc() takes the number of bytes of memory as its parameter I it returns a (void*) pointer to the memory allocated I the pointer can then be cast to the desired type and the memory assigned toavariable CS349/SE382 A1 CProgramming Tutorial Dierences fromC++ Dynamic Memory typedefstruct{ ...

 

 

 

 

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