homework 10.24

#include<stdio.h>
main()
{
	char a;
	float b,c,x1,x2,x3,x4;
	printf("please input the number figures:");
	scanf("%d%c%d",&b,&a,&c);
	x1=b+c;x2=b-c;x3=b*c;x4=b/c;
	if(a=='+')
	{
	printf("%d
",x1);
	}
	else if(a=='-')
	{
	printf("%d
",x2);
	}
	else if(a=='*')
	{
	printf("%d
",x3);
	}
	else if(a=='/')
	{
	printf("%d
",x4);
	}
	else
	{
	printf("sorry,please quit
");
}