C&c++ Recap

I learned C + + in my freshman years, but I forgot about it, and seldom used it. The Windows system was used, or Visual C + +. At that time, the computer did not have a cold, and did not study well. Recently in the study of R encountered bottlenecks, think to pick up the once C + +. Now the time has changed, the system for Mac, the previous knowledge has already forgotten all, can only start again.

1. IDE

It's good to choose Eclipse CDT. A few notes:

A. Inconsistencies in C and C + +:

If you create a source file, the end of C is. c, and C + + files end With. cpp;

The syntax is inconsistent, and the simplest Hello world can see:

//C + + code#include<iostream>using namespacestd;intMain () {cout<<"!!! Hello World!!!"<< Endl;//Prints!!! Hello World!!!    return 0;}//C Code#include <stdio.h>//". h" must is added for CMain () {printf ("Hello World");}

B. Compiler selection:

Select MacOSX GCC to

Sometimes the compiler has some problems, it is said to be related to MacOS system, try to double-click binary file on work

If you are compiling directly with the compiler, be aware of the differences between C and C + + files:

　　　　

GCC file g+ + HelloWorld. CPP file

C&c++ Recap