请给看看谢谢了

#include<stdio.h>
void main()
{

int a,b;

int he,cha,ji,yu;

float shang;

printf("\n请输入2个数值\n");
scanf("%d\n%d",&a,&b);

he=a+b;

cha=a-b;

ji=a*b;
shang=a/b;

yu=a%b;

printf("\n和为:%d\n",he);

printf("\n差为:%d\n",cha);
;
printf("\n积为:%d\n",ji);

printf("\n商为:%3.5f\n",shang);

printf("\n余为:%d\n",yu);

}
输入整数可以,如果整数和小数都可输入怎么写呢?
谢谢