VS2005下各基本类型的size

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系统信息操作系统 Windows XP Professional SP2 编译环境 Microsoft Visual Studio 2005 CPU Pentium(R) Dual-Core CPU E5200 @ 2.50 GHz

基本类型

数据类型大小 int 4 char 1 long 4 double 8 float 4 short 2 bool 1

基本类型指针（可以看出指针都是4）

数据类型大小 int* 4 char* 4 long* 4 double* 4 float* 4 short* 4 bool* 4 void* 4

unsigned数据类型

数据类型大小 unsigned int 4 unsigned char 1 unsigned long 4 unsigned short 2

测试代码：

#include <iostream>
void main(void)
{
std::cout << "System Info: " << std::endl;
std::cout << "IDE:/tMicrosoft Visual Studio 2005" << std::endl;
std::cout << "OS:/tWindows XP Professional SP2" << std::endl;
std::cout << "CPU:/tPentium(R) Dual-Core CPU E5200 @ 2.50 GHz" << std::endl;
std::cout << "*********************************************************" << std::endl;
std::cout << "int:/t" << sizeof(int) << std::endl; // 4
std::cout << "char:/t" << sizeof(char) << std::endl; // 1
std::cout << "double:/t" << sizeof(double) << std::endl; // 8
std::cout << "float:/t" << sizeof(float) << std::endl; // 4
std::cout << "bool:/t" << sizeof(bool) << std::endl; // 1
std::cout << "long:/t" << sizeof(long) << std::endl; // 4
std::cout << "short:/t" << sizeof(short) << std::endl; // 2
std::cout << "*********************************************************" << std::endl;
std::cout << "int*:/t" << sizeof(int*) << std::endl; // 4
std::cout << "char*:/t" << sizeof(char*) << std::endl; // 4
std::cout << "double*:" << sizeof(double*) << std::endl; // 4
std::cout << "float*:/t" << sizeof(float*) << std::endl; // 4
std::cout << "bool*:/t" << sizeof(bool*) << std::endl; // 4
std::cout << "long*:/t" << sizeof(long*) << std::endl; // 4
std::cout << "short*:/t" << sizeof(short*) << std::endl; // 4
std::cout << "void*:/t" << sizeof(void*) << std::endl; // 4
std::cout << "*********************************************************" << std::endl;
std::cout << "unsigned int:/t" << sizeof(unsigned int) << std::endl; // 4
std::cout << "unsigned char:/t" << sizeof(unsigned char) << std::endl; // 1
std::cout << "unsigned long:/t" << sizeof(unsigned long) << std::endl; // 4
std::cout << "unsigned short:/t" << sizeof(unsigned short) << std::endl; // 2
std::cout << "*********************************************************" << std::endl;
system("pause");
}