C语言中if坐标怎么写,C语言用if嵌套判断点的坐标（带坐标轴）

原先做的东西 出现“'__****'在模块” 语法错误

#include

main()

{

float x,y;

printf("Input the coordinate of a point\n");

printf("x=");

scanf("%f",&x);

printf("y=");

scanf("%f",&y);

if(x==0)

if(y>0)

printf("The point is at the Y zhengbanzou");

else

if(y==0)

printf("The point is at the yuandian");

else

printf("The point is at the Y fubanzou");

else

if(x>0)

if(y>0)

printf("The point is in 1st quadrant.\n");

else

if(y==0)

printf("The point is at the X zhengbanzou");

else

printf("The point is in 4st quadrant.\n");

else

if(y>0)

printf("The point is in 2st quadrant.\n");

else

if(y==0)

printf("The point is at the X zhengbanzou");

else

printf("The point is in 3st quadrant.\n");

getch();

}

改了之后

#include

main()

{

float x,y;

printf("Input the coordinate of a point.\n");

printf("x=");

scanf("%f",&x);

printf("y=");

scanf("%f",&y);

if(x==0)

{if(y>0)

printf("The point is at the Y zhengbanzou.\n");

else

{if(y==0)

printf("The point is at the yuandian.\n");

else

printf("The point is at the Y fubanzou.\n");}}

else

if(x>0)

{if(y>0)

printf("The point is in 1st quadrant.\n");

else

if(y==0)

printf("The point is at the X zhengbanzou.\n");

else

printf("The point is in 4st quadrant.\n");}

else

{if(y>0)

printf("The point is in 2st quadrant.\n");

else

{if(y==0)

printf("The point is at the X fubanzou.\n");

else

printf("The point is in 3st quadrant.\n");}}

getch();

}