用c語言求分段函數(shù)

#includestdio.h???

int?main()???

{

???float?x,y;

???scanf("%f",x);

???if(x1)

???{

???????y=x*x;

???}

???else?if(x=1x=10)

???{

???????y=2*x-1;

???}

???else

???????y=3*x-11;

???printf("x=%f,y=%f\n",x,y);

???return?0;

}

c語言求下面的分段函數(shù)，多種方法

int Fun1(int num)

{

if(num 0)

{

return num;

}

else if(num 10)

{

return num - 10;

}

else

{

return num + 10;

}

}

int Fun2(int num)

{

if(num 10)

{

if(num 0)

{

return num;

}

else

{

return num -10;

}

}

else

{

return num +10;

}

}

int Fun3(int num)

{

switch(num0)

{

case 0:

{

switch(num10)

{

case 0:

return num +10;

case 1:

return num - 10;

}

}

case 1:

return num;

}

}

c語言求分段函數(shù)

幫你改了下代碼，VC6測試通過，自己看看吧。

#includestdio.h

int main()

{

float x,y;//根據(jù)給定的測試用例，x，y應(yīng)該為float型

scanf("%f",x);//x為float型，所以改為%f

if(x20)

{

y=x+100;

}

else if(x=20x=100)

{

y=x;

}

else

y=x-100;

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

return 0;//缺少分號

}

用C語言求分段函數(shù)值

#include?stdio.h?

int?main()?

{double?x,y;

?scanf("%lf",x);

?if(x0)y=x*x-1;

???else?if(x1)y=x*x;

?????else?y=x*x+1;

?printf("%g",y);

return?0;?

}