Exercise 6-6 use a function to output an integer in reverse order

exercises 6-6 Use the function to output an integer in reverse order (20 branch )

This problem requires the implementation of a simple function for finding the inverse number of integers .

Function interface definition ：

int reverse( int number );

The function reverse The integer passed in by the user must be returned number In reverse order .

Sample referee test procedure ：

#include <stdio.h>

int reverse( int number );
    
int main()
{
    int n;

    scanf("%d", &n);
    printf("%d\n", reverse(n));

    return 0;
}

/*  Your code will be embedded here  */

sample input ：

-12340

sample output ：

-4321

int reverse( int number ){
    if(number<0){
        printf("-");
        number=-number;
    }
    int n=0,r;
    do{
        n=n*10+number%10*10;
        number/=10;
    }while(number);
    r=n/10;
    return r;
}