基本类型和大小

 1 #include <iostream>
 2 
 3 
 4 #define TEST_TYPE(type) {std::cout<< #type << " : " <<sizeof(type)<<std::endl;}
 5 
 6 int main()
 7 {
 8     TEST_TYPE(bool);
 9 
10     TEST_TYPE(char);
11     TEST_TYPE(signed char);
12     TEST_TYPE(unsigned char);
13     TEST_TYPE(wchar_t);
14     TEST_TYPE(char16_t);
15     TEST_TYPE(char32_t);
16 
17     TEST_TYPE(short);
18     TEST_TYPE(int);
19     TEST_TYPE(long);
20     TEST_TYPE(long long);
21 
22     TEST_TYPE(float);
23     TEST_TYPE(double);
24     TEST_TYPE(long double);
25 
26     TEST_TYPE(unsigned short);
27     TEST_TYPE(unsigned int);
28     TEST_TYPE(unsigned long);
29     TEST_TYPE(unsigned long long);
30 
31     std::getchar();
32     return 0;
33 }