//整型
int integertype = 5;
//浮點型
float floattype = 3.1415;
//雙浮點型
double doubletype = 2.2033;
//短整型
short int shorttype = 200;
//長整型
long int longlongtype = 7758123456767l;
//c語言字串
char * cstring = "this is a string!";
// 4位元組
nslog(@"the size of an int is: %ld bytes",sizeof(int));
//2位元組
nslog(@"the size of an short int is: %ld bytes",sizeof(short int));
//8位元組
nslog(@"the size of an long int is: %ld bytes",sizeof(long int));
//1位元組
nslog(@"the size of an char is: %ld bytes",sizeof(char));
//4位元組
nslog(@"the size of an float is: %ld bytes",sizeof(float));
//8位元組
nslog(@"the size of an double is: %ld bytes",sizeof(double));
//1位元組
nslog(@"the size of an bool is: %ld bytes",sizeof(bool));
//整型
nslog(@"the value of integertype = %d.",integertype);
//浮點型
nslog(@"the value of integertype = %.2f.",floattype);
//double型
nslog(@"the value of integertype = %e.",doubletype);
//短整型
nslog(@"the value of integertype = %d.",shorttype);
//長整形
nslog(@"the value of integertype = %ld.",longlongtype);
//c語言字串
nslog(@"the value of integertype = %s.",cstring);
列印結果：
2016-10-09 17:07:01.375231 ocdemo[12845:1095736] 格式化輸出資料
2016-10-09 17:07:01.375249 ocdemo[12845:1095736] the value of integertype = 5.
2016-10-09 17:07:01.375302 ocdemo[12845:1095736] the value of integertype = 3.14.
2016-10-09 17:07:01.375319 ocdemo[12845:1095736] the value of integertype = 2.203300e+00.
2016-10-09 17:07:01.375329 ocdemo[12845:1095736] the value of integertype = 200.
2016-10-09 17:07:01.375337 ocdemo[12845:1095736] the value of integertype = 7758123456767.
2016-10-09 17:07:01.375362 ocdemo[12845:1095736] the value of integertype = this is a string!.
//基本資料型別封裝到nsnumber類中
nsnumber *num = [nsnumber numberwithint:88];
//nsnumber示例取出基本型別資料
nsinteger integer = [num intvalue];
nsinteger integernumber = 888;nsstring * string = [nsstring stringwithformat:@"%d",integernumber];
nslog(@"string is %@", string);integer = [string intvalue];nslog(@"integer is%d", integernumber);
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