1、源代码
#include <iostream>
using namespace std;
int main(int argc, const char * argv[])
{
cout << "sizeof(char) = " << sizeof(char) << endl;
cout << "sizeof(short) = " << sizeof(short) << endl;
cout << "sizeof(int) = " << sizeof(int) << endl;
cout << "sizeof(float) = " << sizeof(float) << endl;
cout << "sizeof(long) = " << sizeof(long) << endl;
cout << "sizeof(void *) = " << sizeof(void *) << endl;
cout << "sizeof(long long) = " << sizeof(long long) << endl;
cout << "sizeof(double) = " << sizeof(double) << endl;
return 0;
}
2、32位系统
macos系统(版本号:10.13.2)
编译器:clang++
Apple LLVM version 9.0.0 (clang-900.0.39.2)
Target: x86_64-apple-darwin17.3.0)
编译选项:-arch i386
sizeof(char) = 1
sizeof(short) = 2
sizeof(int) = 4
sizeof(float) = 4
sizeof(long) = 4
sizeof(void *) = 4
sizeof(long long) = 8
sizeof(double) = 8
3、64位系统
macos系统(版本号:10.13.2)
编译器:clang++
Apple LLVM version 9.0.0 (clang-900.0.39.2)
Target: x86_64-apple-darwin17.3.0)
编译选项:-arch x86_64
sizeof(char) = 1
sizeof(short) = 2
sizeof(int) = 4
sizeof(float) = 4
sizeof(long) = 8
sizeof(void *) = 8
sizeof(long long) = 8
sizeof(double) = 8
4、长度对比表
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作者:太行一粟
来源:CSDN
原文:https://blog.csdn.net/weixin_41103006/article/details/78998463
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