| C声明 | 32位机器 | 64位机器 |
| char | 1 | 1 |
| short int | 2 | 2 |
| int | 4 | 4 |
| long int | 4 | 8 |
| long long int | 8 | 8 |
| char*(占机器的最大位数) | 4 | 8 |
| float | 4 | 4 |
| double | 8 | 8 |
| C声明 | 32位机器 | 64位机器 |
| char | 1 | 1 |
| short int | 2 | 2 |
| int | 4 | 4 |
| long int | 4 | 8 |
| long long int | 8 | 8 |
| char*(占机器的最大位数) | 4 | 8 |
| float | 4 | 4 |
| double | 8 | 8 |
原文：https://www.cnblogs.com/jiaoqiang/p/8733957.html