#include<stdio.h>
int main()
{
//printf("hello world\n");
int age;
double weight;
age = 20,
weight = 75;
age = age + 1;
weight = weight - 10;
printf("%d\n", age);
printf("%lf\n", weight);
return 0;
//%d--整型；
//%f--float;
//%lf--double;
}