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Proposing use of C++ header files and functions (#4869)

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* Proposing use of C++ header files and functions 

Proposing use of C++ header files and functions instead of C header file and functions. 
Here are few examples for comparison : 

C                            C++
<cstdio>                <iostream> & <fstream>
printf()                     cout 
fopen()                    ifstream
etc ...

Please let me know if there are any comments.

* Updated diff based on review comments
This commit is contained in:
kulswanand
2018-08-14 05:06:11 +05:30
committed by Wouter van Oortmerssen
parent 55289c55bf
commit c721009491
1 changed files with 13 additions and 10 deletions
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23
docs/source/CppUsage.md
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@@ -59,15 +59,18 @@ a `char *` array, which you pass to `GetMonster()`.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
#include "flatbuffers/flatbuffers.h"
#include "monster_test_generate.h"
#include <cstdio> // For printing and file access.
#include <iostream> // C++ header file for printing
#include <fstream> // C++ header file for file access
FILE* file = fopen("monsterdata_test.mon", "rb");
fseek(file, 0L, SEEK_END);
int length = ftell(file);
fseek(file, 0L, SEEK_SET);
std::ifstream infile;
infile.open("monsterdata_test.mon", std::ios::binary | std::ios::in);
infile.seekg(0,std::ios::end);
int length = infile.tellg();
infile.seekg(0,std::ios::beg);
char *data = new char[length];
fread(data, sizeof(char), length, file);
fclose(file);
infile.read(data, length);
infile.close();
auto monster = GetMonster(data);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -78,9 +81,9 @@ If you look in your generated header, you'll see it has
convenient accessors for all fields, e.g. `hp()`, `mana()`, etc:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp}
printf("%d\n", monster->hp()); // `80`
printf("%d\n", monster->mana()); // default value of `150`
printf("%s\n", monster->name()->c_str()); // "MyMonster"
std::cout << "hp : " << monster->hp() << std::endl; // `80`
std::cout << "mana : " << monster->mana() << std::endl; // default value of `150`
std::cout << "name : " << monster->name()->c_str() << std::endl; // "MyMonster"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*Note: That we never stored a `mana` value, so it will return the default.*