}
printf("y=f(%f)=%.2f\n", x, y);


return 0;

  <span style="color: purple">if</span> a = <span style="color: orange">1</span> <span style="color: purple">then</span> <span style="color: green">"F#"</span> 1349

  ### f（x，y） 2295

  一个分段函数 y=2x(x>=0) y=-1(x<0) 2031

  <input type="number" onchange="console.log(e.target.value)"> 1434

  #include<stdio.h> void main() { int x; printf(":"); scanf("%d",&x); if(x%2==0) printf("%d\n",x); else printf("%d\n",x); } 3258

  #include<stdio.h> int main() { int week = 0; scanf("%d",&week); if(week >= 7){ printf("小了"); }else{ if(week <= 1) printf("大了"); } return 0; } 3196

  #include<stdio.h> /*引入头文件*/ int main(void) /*一个简单的C程序*/ { double x, y; /*定义个名字叫做number的变量*/ /*给number赋一个值*/ printf("Enter x(x>=0):\n"); /*调用printf()函数*/ scanf("%f\n",&x); if(x<=15){y=4*x/3; }else{y=2.5*x-10.5; } printf("y=f(%f)=%.2f\n", x, y); return 0; } 1173

  LESSON 1 #include<stdio.h> int main(){ printf("hello world"); return 0; } 1690

  y=-1,x<0;y=0,x<0;y=1,x>0 1069

  <div id="#app"></div> <style> </style> 501

  #inclde<stdio.h> main() { int num=0; while(num<=2) { num==; printf("%d",num): } } 1429

  #inclde<stdio.h> main() { int num=0; while(num<=2) { num==; printf("%d",num): } } 2420
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