本文详细介绍了在CentOS x32和x64环境下，不同类型的数据在内存中所占的大小差异。包括基本数据类型如char、int、long、float、long long、double、long double以及指针类型的数据大小对比。
在centos_x32和centos_x64下对应的类型长度：
/*******size of types on centos_x32*****************/
size of char:1
size of int:4
size of long :4
size of float :4
size of long long:8
size of double:8
size of long double:12
size of char * :4
/*******size of types on centos_x64*****************/
size of char:1
size of int:4
size of long :8
size of float :4
size of long long:8
size of double:8
size of long double:16
size of char * :8
/*******size of types on centos_x32*****************/
size of char:1
size of int:4
size of long :4
size of float :4
size of long long:8
size of double:8
size of long double:12
size of char * :4
/*******size of types on centos_x64*****************/
size of char:1
size of int:4
size of long :8
size of float :4
size of long long:8
size of double:8
size of long double:16
size of char * :8
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