1.
#include<stdio.h>
double n_min(double x, double y);
int main(void)
{
double num1, num2;
scanf("%lf", &num1);
scanf("%lf", &num2);
printf("较小的是:%lf", n_min(num1, num2));
return 0;
}
double n_min(double x, double y)
{
return (x < y ? x : y);
}