シェルプロセスコントロール入門

<span style="font-size:18px;">#include<windows.h>
#include<gl/gl.h>
#include<gl/glut.h>


// default view: at the origin in the negative direction of the z-axis

void SetupRC(void)
{
	//set the window background color to white
	glClearColor(1.0f, 1.0f, 1.0f,1.0f);
}

//Draw triangle
void DrawTriangle(void)
{
	glBegin(GL_TRIANGLES);
	glVertex2f(0.0f,0.0f);
	glVertex2f(40.0f,0.0f);
	glVertex2f(20.0f,40.0f);
	glEnd();
}

void ChangeSize(int w,int h)
{
	if (h == 0)
		h = 1;
	glViewport(0,0,w,h);

	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();

	// Set the crop space
	if (w <= h)
		glOrtho(-100.0f, 100.0f, -100.0f*h/w, 100.0f*h/w, -100.0f, 100.0f);
	else
		glOrtho(-100.0f*w/h, 100.0f*w/h, -100.0f, 100.0f, -100.0f, 100.0f);

	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
}

void RenderScene(void)
{
	glClear(GL_COLOR_BUFFER_BIT);


	// Set the current operation matrix to the model view matrix and reset it to the unit matrix
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();

	//draw the black axes
	glColor3f(0.0f,0.0f,0.0f);
	glBegin(GL_LINES);
	glVertex2f(-100.0f,0.0f);
	glVertex2f(100.0f,0.0f);
	glVertex2f(0.0f, -100.0f);
	glVertex2f(0.0f, 100.0f);
	glEnd();
	
	// Draw the first red triangle
	glColor3f(1.0f,0.0f,0.0f);
	DrawTriangle();

	//draw a green triangle rotated counterclockwise by 200 degrees

	glRotatef(200.0f,0.0f,0.0f,1.0f);
	glColor3f(0.0f,1.0f,0.0f);
	DrawTriangle();

	//This step is critical, because OpenGL effects accumulate and must return to the origin
	glLoadIdentity(); 
   

	//draw a yellow triangle with a negative inverse translation of 60 units along the x-axis
	glTranslatef(-60.0f,0.0f,0.0f);
	glColor3f(1.0f,1.0f,0.0f);
	DrawTriangle();


	//glLoadIdentity();
	glTranslatef(120.0f,0.0f,0.0f); //translate 120 in the positive direction of the x-axis
	glScalef(1.0f,2.0f,100.0f);
	glColor3f(0.0f,0.0f,1.0f);
	DrawTriangle();



	//swap the pointers of the two buffers
	//function: prevent screen flicker during complex drawing
	glutSwapBuffers();

}

int main(int argc,char *argv[])
{
	//glutInit is used to initialize the GLUT library
	glutInit(&argc,argv);
	glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB);
	glutCreateWindow("TransformationExample");

	glutDisplayFunc(RenderScene);
	glutReshapeFunc(ChangeSize);


	SetupRC();
	glutMainLoop();
	return 0;
}
</span>

void glTranslated(GLdouble x,GLdouble y,GLdouble z);
void glTranslatef( GLfloat x,GLfloat y,GLfloat z);

void glRotated(GLdouble angle,GLdouble x,GLdouble y,GLdouble z);
void glRotatef( GLfloat angle, GLfloat x,GLfloat y,GLfloat z);

void glScaled(GLdouble x,GLdouble y,GLdouble z);
void glScalef( GLfloat x,GLfloat y,GLfloat z);

if condition1
then
 command1
elif condition2 
then 
 command2
else
 commandN
fi

a=10
b=20
if [ $a == $b ]
then
 echo "a equals b"
elif [ $a -gt $b ]
then
 echo "a is greater than b"
elif [ $a -lt $b ]
then
 echo "a is less than b"
else
 echo "No matched conditions"
fi

num1=$[2*3]
num2=$[1+5]
if test $[num1] -eq $[num2]
then
 echo 'Two numbers are equal!'
else
 echo 'Two numbers are not equal!'
fi

for var in item1 item2 ... itemN
do
 command1
 command2
 ...
 commandN
done

for var in item1 item2 ... itemN; do command1; command2... done;

for loop in 1 2 3 4 5
do
 echo "The value is: $loop"
done

for str in 'This is a string'
do
 echo $str
done

while condition
do
 command
done

#! /bin/bash
int=1
while(( $int<=5 ))
do
 echo $int
 let "int++"
done

echo 'Press <CTRL-D> to exit'
echo -n 'Enter the name of your favorite site: '
while read FILM
do
 echo "Yes! $FILM is a good site"
done

while :
do
 command
done

while true
do
 command
done

for (( ; ; ))

until condition
do
 command
done

#! /bin/bash

a=0

until [ ! $a -lt 10 ]
do
 echo $a
 a=`expr $a + 1`
done

case Value in
mode1)
 command1
 command2
 ...
 commandN
 ;;
(Mode 2)
 command1
 command2
 ...
 commandN
 commandN ;;
esac

echo 'Enter a number between 1 and 4:'
echo 'The number you entered is:'
read aNum
case $aNum in
 1) echo 'You have selected 1'
 ;;
 2) echo 'You have selected 2'
 ;;
 3) echo 'You selected 3'
 ;;
 4) echo 'You selected 4'
 ;;
 *) echo 'You did not enter a number between 1 and 4'
 ;;
esac

#! /bin/bash
while :
do
 echo -n "Enter a number between 1 and 5:"
 read aNum
 case $aNum in
  1|2|3|4|5) echo "The number you entered is $aNum!"
  ;;
  *) echo "The number you entered is not between 1 and 5! Game over"
   break
  ;;
 esac
done

#! /bin/bash
while :
do
 echo -n "Enter a number between 1 and 5: "
 read aNum
 case $aNum in
  1|2|3|4|5) echo "The number you entered is $aNum!"
  ;;
  *) echo "The number you entered is not between 1 and 5! "
   continue
   echo "Game over"
  ;;
 esac
done

case value in
mode1)
 command1
 command2
 command3
 ;;
(Mode 2)
 command1
 command2
 command3
 ;;
*)
 command1
 command2
 command3
 command3;;
esac

#! /bin/sh

site="jb51"

case "$site" in
 "jb51") echo "Script House"
 ;;
 "google") echo "Google search"
 ;;
 "taobao") echo "taobao"
 ;;
esac