自学C语言的,不知道为什么运行程序之后没有输入数字的地方
#include <stdio.h>
int main()
{
int num = 0;
int a = 0;
int b = 0;
int c = 0;
int d = 0;
int e = 0;
scanf("%d", &num);
a = num % 10 * 100;
b = num % 100;
c = b / 10 * 10;
d = num % 10;
e = a + c + b;
printf("%d", e);
return 0;
}