/* 计算二分段函数 */ #include<stdio.h> int main(void) { double x,y; printf("Enter x(x>=0): "); scanf_s("%lf",&x); if(x<=15){ y=4*x/3; } else{ y=2.5*x-10.5; } printf("y=f(%f)=%.2f ",x,y); return 0; }