Objective-C基本数据类型

类型                                                                             常量实例                                                            NSlog字符

char                                                                         ‘a’，‘\n’                                                                 %c

short int                                                                   ----                                                                          %hi,%hx,%ho

unsigned short int                                                ----                                                                           %hu,%hx,%ho

int                                                                           12u,-97,0XFFE0,0177                                          %i,%x,%o

unsigned int                                                        12u,100U,0XFFu                                                   %u,%x,%o

long int                                                                  12L,-2001,0xffffL                                                    %li,%lx,%lo

unsigned long int                                          12UL,100ul,0xffeeUL                                                 %lu,%lx,%lo

long long int                                                          0xe5e5e5e5LL,500ll                                            %lli,%llx,&llo

unsigned long long int                                       12ull,0xffeeULL                                                     %llu,%llx,%llo

float                                                                        12.34f,3.le-5f,0x1.5p10,0xlp-1                            %f,%e,%g,%a

double                                                                    12.34,3.1e-5,0x.1p3                                              %f,%e,%g,%a

long double                                                          12.341,3.1e-51                                                      %Lf,$Le,%Lg

id                                                                              nil                                                                             %p