Mark c answers your question.

# include & ltstdio.h & gt

int main()

{

int a，b，c；

Printf ("Please enter two integer variables to be exchanged: \ n");

Scanf("%d%d ",&i, & b);

c = a；

a = b；

b = a；

Printf ("The two variables after exchange are %d, %d\n", a, b);

Returns 0;

}

You can ask if you don't understand. Please don't accept people who plagiarize my answers. Thank you.

I hope I can help you, and I hope it is a satisfactory answer.