PROGRAMMING:Numerical exchange
Numerical exchange is a skill that is often used in any programming language. Now please use C language to exchange two numerical values.
###Input format:
Enter two integers a and B
###Output format:
Exchange the values of a and B and output.
###Input example:
```in
3 4
```
###Output example:
```out
4 3
```
answer：If there is no answer, please comment
###Input format:
Enter two integers a and B
###Output format:
Exchange the values of a and B and output.
###Input example:
```in
3 4
```
###Output example:
```out
4 3
```
answer：If there is no answer, please comment