c++14基础语法

以下基于c++14版本

整型

short i1 = 1;

int i2 = 0;

long i3 = 0;

unsigned short i4 = 1;

unsigned int i5 = 1;

unsigned long i6 = 1;

浮点型

float f1 = 0.2;

double f2 = -0.2;

long double f5 = 0.9;

字符型

// utf-8字符

char i = 'a';

char u8_array[] = u8"标准库";

std::string u8_str = u8"标准库";

// utf-16字符

char16_t u16_c = u'标';

char16_t u16_array[] = u"标准库";

std::u16string u16_str = u"标准库";

// ucs4字符

char32_t u32_c = U'标';

char32_t u32_array[] = U"标准库";

std::u32string u32_str = U"标准库";

数组

// 定义后赋值

int d[3];

d[0] = 100;

// 定义并初始化

int e[10]={0,1,2,3,4,5,6,7,8,9};

int f[]={5, 6, 7};

int g[10]={0,1,2,3,4};