#include <stdio.h>
int main(void)
 {
      int num1=2;      /*定义整型变量 num1,并赋值为2*/
     int num2=3;      /*定义整型变量 num2,并赋值为3*/
     
     printf("I have %d cats.\n",num1); /*调用printf()函数*/
     printf("You have %d cats.\n", num2);
              return 0;
}