习题:简单函数
1 /*有函数:--- -1 (x<0) 2 y- 0 (x=0) 3 --- 1 (x>0) 4 */ 5 #include<stdio.h> 6 main() 7 { 8 float x,y; 9 printf("Please input X: \n"); 10 scanf("%f",&x); 11 if (x<0) 12 { 13 y=-1; 14 } 15 else 16 { 17 if(x==0) 18 { 19 y=0; 20 } 21 else 22 { 23 y=1; 24 } 25 } 26 printf("Y=%f\n",y); 27 return 0; 28 }