如何写一个分段函数

 

     

      x          (x<1)

y={2x-1      (x>=1&&x<=10)

     3x-11    (x>=10)

#include<stdio.h>int main(){ int x,y; printf("请输入x值；"); scanf("%d",&x); if(x<1) { y=x; printf("x=%3d,y=x=%d/n",x,y); } else if(x<10) {y=2*x-1; printf("x=%3d,y=2*x-1=%d/n", x,y); } else { y=3*x-11; printf("x=%3d,y=3x-11=%d/n",x,y); }system("pause");}