c语言PTA7-14 函数编程-分段函数 (15分)
#include<stdio.h>
#include<math.h>
int main()
{
double hanshu(double a);
double x;
scanf("%lf",&x);
double y;
int a=0;
if(x<=-2){
y=-exp(2x+1)+3;
a=1;
}
if(x>3){
y=hanshu(x);
a=1;
}
if(a==0)printf(“y=%.6lf”,2x-1);
if(a==1)
printf(“y=%.6lf”,y);
return 0;
}
double hanshu(double a){
double b;
if(a>3)b=2log10(3a+5)-11;
return b;
}